AP Physics C: Mechanics FRQ Room

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AP Physics C: Mechanics Free Response Questions

The best way to get better at FRQs is practice. Browse through dozens of practice AP $AP Physics C: Mechanics FRQs to get ready for the big day.

  • View all (250)
  • Unit 1: Kinematics (50)
  • Unit 3: Work, Energy, and Power (46)
  • Unit 4: Systems of Particles and Linear Momentum (38)
  • Unit 5: Rotation (33)
  • Unit 6: Oscillations (52)
  • Unit 7: Gravitation (31)
Unit 1: Kinematics

Air Resistance and Projectile Motion

In an experiment, two projectiles with different surface textures (one smooth and one rough) are lau

Hard

Analysis of Air Resistance Effects on Free Fall

In an experiment on free fall, an object is dropped and its velocity is measured over time. The calc

Medium

Analyzing Motion with a Nonlinear Acceleration Function

A particle moves along the x-axis with an acceleration given by $$a(t)=4\cos(t)$$ (m/s²). It has an

Extreme

Calculus in One-Dimensional Kinematics

Consider an object whose position as a function of time is given by $$x(t)=\sin(t)+t^2$$, where x is

Medium

Comparative Analysis of Kinematic Equations

A researcher claims that the kinematic equation $$s=ut+\frac{1}{2}at^2$$ is universally valid for al

Medium

Conservation of Energy in Projectile Motion

A projectile is launched from the ground with an initial speed $$v_0 = 50$$ m/s at an angle of $$45°

Easy

Determining Instantaneous Acceleration from a Displacement Graph

An experiment recorded the displacement of an object as a function of time using a high-precision se

Hard

Determining Launch Angle from Experimental Data

A projectile is launched with an unknown initial speed and angle. In an experiment, the total flight

Hard

Displacement Calculation from a Velocity-Time Graph

The velocity of an object is depicted by the following graph. Answer the subsequent questions based

Hard

Distance vs. Displacement Analysis in One-Dimensional Motion

An object moves along a straight path and its motion is described by the velocity function $$v(t) =

Easy

Drone Video Analysis of Free Fall

A drone records a free-falling ball dropped from a 100 m height. Video analysis approximates the bal

Easy

Dynamic Motion Analysis: Cubic Position Function

A particle's position along the x-axis is given by $$x(t) = t^3 - 6t^2 + 9t$$ with time t in seconds

Hard

Evaluating Non-Uniform Acceleration from Experimental Data

A student records the following velocity data for an object undergoing non-uniform acceleration:

Extreme

Experimental Determination of g

In a free-fall experiment, a student fits the data to obtain the position function $$h(t)= 4.9*t^2$$

Medium

FRQ 3: Projectile Motion with Calculus Analysis (MEDIUM)

A projectile is launched with an initial speed of $$60\,m/s$$ at an angle of $$30^\circ$$ above the

Medium

FRQ 5: Calculus-Based Displacement Calculation

An object has a velocity given by the function $$v(t) = 3*t^2 - 2*t + 5$$ (with t in seconds and v i

Medium

FRQ 6: Motion on an Inclined Plane

A researcher studies the motion of a block sliding down an inclined plane with friction. The block i

Medium

FRQ 9: Piecewise Acceleration Motion (HARD)

An object moves along a straight line with acceleration defined piecewise as follows: For $$0 \le t

Hard

FRQ 10: Comparative Analysis of Two Cars with Different Acceleration Profiles

A researcher compares the motion of two cars starting from rest. Car A accelerates at a constant rat

Medium

FRQ 10: Experimental Analysis of Free Fall

Below is experimental data from free fall tests for objects dropped from various heights: | Height

Medium

FRQ 11: Modeling Motion with Differential Equations

A researcher is modeling the motion of a ski jumper. The dynamics of the jumper's flight can be expr

Extreme

FRQ 15: Investigating Uniformly Accelerated Motion Using Integrals

A researcher records the acceleration of an object with a sensor, finding that the acceleration vari

Medium

FRQ 17: Vector Field Analysis – Wind Impact on Projectile Motion

A researcher examines how a time-varying wind affects the horizontal motion of a projectile. In this

Hard

FRQ 19: Analysis of Motion on an Inclined Plane (MEDIUM)

An object slides down a frictionless inclined plane that makes an angle $$\theta$$ with the horizont

Medium

FRQ 20: Evaluating Data Uncertainty from a Velocity-Time Graph (EXTREME)

A velocity vs. time graph obtained from an experiment includes error bars on each data point. The be

Extreme

Graphical Analysis of Distance and Displacement

A student records the position of a runner during a 10-second race, resulting in the following table

Easy

Impulse and Momentum with a Variable Force

A cart of mass $$m = 5.0\,kg$$ is subjected to a time-dependent force described by $$F(t)=5*t²$$ (in

Hard

Kinematics in a SmartLab Setup: Integration Error

In a SmartLab experiment, sensors measured both the acceleration and displacement of an object movin

Hard

Motion in One Dimension: Variable Acceleration

An object moves along the x-axis with an acceleration given by $$a(t) = 3*t$$ (in m/s²). At time $$t

Easy

Motion of a Bus on a Curved Track

A bus moves along a curved track with its acceleration given by $$a(t)= 0.2*t + 0.5*\sin(t)$$ (m/s²)

Medium

Motion on an Inclined Plane with Friction

A block of mass m slides down an inclined plane making an angle $$\theta$$ with the horizontal. The

Medium

Motion with Air Resistance: Approximating Terminal Velocity

A small sphere falling through a medium experiences air resistance proportional to its velocity. Its

Extreme

One-Dimensional Uniform Acceleration Analysis

An object moves along a straight line with its position given by $$x(t) = -2*t^3 + 5*t^2 - 3*t + 1$$

Medium

Pendulum Energy Conservation Experiment

Design an experiment to test the conservation of mechanical energy in a simple pendulum system. Your

Medium

Pendulum Motion and Kinematics

A pendulum of length 2 m oscillates with small amplitude. Its angular displacement is given by $$θ(t

Medium

Projectile Launch from an Elevated Platform

A ball is launched from a platform 10 meters above the ground with an initial speed of 30 m/s at an

Medium

Projectile Motion Analysis

An object is launched with an initial speed of $$60\,m/s$$ at an angle of $$30^\circ$$ above the hor

Medium

Projectile Motion using Calculus

A projectile is launched from ground level at an angle of 30° with an initial speed of 40 m/s (negle

Hard

Projectile Motion with Air Resistance

Design an experiment to study the effect of launch angle on the horizontal range of a projectile in

Medium

Relative Motion: Meeting of Two Objects

Two objects move along a straight line. Object A starts at x = 0 m with a constant velocity of 10 m/

Medium

Simultaneous Measurement of Velocity and Acceleration

In an experiment, separate sensors were used to simultaneously measure both the velocity and acceler

Extreme

Sinusoidal Motion

A particle’s position along the x-axis is given by $$x(t)=8\sin(t)$$, where $$0\leq t\leq2\pi$$ (x i

Easy

Skydiver with Air Resistance: Variable Acceleration

A skydiver of mass m experiences air resistance proportional to velocity, characterized by the const

Extreme

Trajectory Optimization of an Accelerating Car

A car accelerates according to $$a(t)= 6 - 0.5*t$$ (m/s²) with an initial velocity of 10 m/s at $$t=

Hard

Uniformly Accelerated Motion on an Inclined Plane

A 5.0-kg block is placed on a 30° inclined plane. When released, it slides down with a coefficient o

Easy

Variable Acceleration Analysis

An object experiences variable acceleration described by $$a(t) = 2*t$$ (in m/s²).

Easy

Variable Acceleration Analysis Using Calculus

Design an experiment to investigate the motion of an object under a time-varying force that produces

Hard

Vector Displacement and Total Distance

An object moves along a straight line in two phases. First, it moves 10 m to the east, then it moves

Easy

Verifying Free Fall Acceleration

Design an experiment to verify the acceleration due to gravity using free-fall motion. Detail your m

Easy

Work and Energy in Linear Motion

A variable force acts on a 3.0-kg object moving along the x-axis, where the force is given by $$F(x)

Medium
Unit 3: Work, Energy, and Power

Analysis of a Potential Energy Curve

An object of mass 3 kg moves along the x-axis in a potential energy field given by $$U(x) = (x-1)(x-

Hard

Block Under a Varying Force

A 2 kg block moves along a frictionless horizontal surface under the influence of a variable force g

Medium

Comparative Analysis of Constant and Variable Force Work

Two experiments are performed on a 3 kg object. In Experiment 1, the object is moved under a constan

Hard

Comparative Analysis of Constant vs. Variable Gravitational Work

An object of mass $$m= 10 \;\text{kg}$$ is lifted from the ground (assume $$x=0$$) to a height of $$

Medium

Comparing Work–Energy Analysis Across Different Reference Levels

A researcher examines the impact of choosing different reference levels for potential energy calcula

Medium

Determining Instantaneous Power from a Velocity-Time Graph

A car of mass 1200 kg has its velocity measured as a function of time. The graph provided represents

Medium

Elastic Potential Energy and Hooke’s Law

A spring with a spring constant of $$ k = 200 \;N/m $$ is compressed by 0.1 m from its equilibrium p

Easy

Energy Analysis in a Damped Spring-Mass Oscillator

A 1 kg mass attached to a spring with spring constant 100 N/m is initially compressed 0.1 m from its

Hard

Energy Conservation in a Pendulum

A simple pendulum has a length $$L = 2 \text{ m}$$ and is released from rest at an initial angle of

Medium

Energy Conservation in a Pendulum

A simple pendulum of length 2 m and mass 0.5 kg is released from an initial angle of 30° with respec

Medium

Energy Loss in Inelastic Collisions Experiment

Two carts on a frictionless track undergo a collision. Cart A (1 kg) moves at 4 m/s and collides wit

Medium

Experiment on Electric Motor Power Output

Design an experiment to measure the power output of an electric motor used in a small robotic car.

Hard

Experimental Determination of the Coefficient of Friction

A 4 kg block is pulled along a horizontal surface. The applied force, which varies with position, is

Hard

Explosive Separation and Energy Distribution

A stationary object of mass $$M = 10\,kg$$ undergoes an explosion and splits into two fragments with

Extreme

FRQ 1: Vertical Lifting Experiment – Work Calculation

A lab student lifts a 1.5 kg mass vertically at constant velocity and records the force applied alon

Medium

FRQ 6: Work Done on a Crate on an Inclined Plane

A 20-kg crate is moved up a 30° inclined plane. Experimental measurements of the force component alo

Medium

FRQ 8: Investigation of Variable Power Output in a Pulley System

A pulley system is used to tow a load with a constant force of 100 N. A sensor records the instantan

Easy

FRQ 10: Work Done on a Variable Mass System

A recent claim suggests that for systems with variable mass (e.g., rockets), the work done by a non-

Extreme

FRQ 11: Deriving Force from a Potential Energy Function

A study posits that the force acting on a particle can be obtained via $$F(x) = - \frac{dU}{dx}$$. E

Hard

FRQ 15: Energy Conservation in an Oscillating Spring–Mass System

A 2-kg mass attached to a spring (with spring constant k = 200 N/m) oscillates horizontally. A displ

Medium

FRQ 16: Evaluating Power Output Measurements in a Rocket Launch

A media report asserts that the power output of a rocket engine can be approximated by the formula $

Hard

FRQ 20: Non-Constant Force Work Calculation via Integration

An experiment claims that for a non-constant force, the work done on an object can be accurately com

Medium

Impulse and Energy Transfer via Calculus

A 2-kg object experiences a time-dependent force given by $$F(t)= 4*t$$ N for $$0 \leq t \leq 5\,s$$

Medium

Investigation of Non-Conservative Forces in a Roller Coaster Model

A researcher develops a model of a roller coaster of mass 500 kg moving along a track with both grav

Hard

Kinetic Energy and Work-Energy Theorem Application

A block of mass 2 kg undergoes net work in two different scenarios. Use the work–energy theorem to f

Easy

Kinetic Energy Gain in a Roller Coaster Ride

A roller coaster car of mass 500 kg is released from rest at the top of a frictionless hill at a hei

Medium

Measuring Work Done against Air Resistance in Free Fall

A researcher studies the motion of a 1 kg object falling under gravity with air resistance. The drag

Extreme

Potential Energy Curve Analysis

An object of mass m is subject to a potential energy function given by $$U(x) = x^3 - 6*x^2 + 9*x +

Extreme

Potential Energy Curves and Equilibrium Analysis

An object of mass 4 kg has a potential energy function given by $$U(x) = (x - 2)^2 - (2\,x - 3)^3$$.

Extreme

Power Output in Elevator Lifting

A motor lifts an elevator of mass 500 kg at a constant speed of 2.5 m/s over a vertical displacement

Easy

Pulley System Work–Energy Verification

A two-mass pulley system is used to verify the work–energy theorem. Velocities of both masses are re

Hard

Rolling Sphere Energy Experiment

A solid sphere is rolled without slipping down a tilted ramp, and its kinetic energy is measured at

Medium

Rotational Work-Energy in a Pulley System

A pulley with a radius of 0.2 m and a moment of inertia $$I = 0.5\,kg\cdot m^2$$ rotates without sli

Hard

Runner's Power Output Analysis

In a track experiment, a runner’s power output is calculated using the formula $$P = m*a*v$$ obtaine

Medium

Solar Energy Mechanical Conversion Experiment

In a lab setup, a solar panel powers an electric motor that lifts a 10 kg mass vertically by 3 m at

Medium

Spectroscopic Potential Energy Curve Analysis

A spectroscopic experiment is conducted to infer the potential energy curve of a diatomic molecule f

Extreme

Tidal Energy Extraction Analysis

A tidal turbine is installed in a coastal area where water flow speed varies cyclically. The force e

Extreme

Time-dependent Power and Differential Equations

A machine's power output, $$P(t)$$ in watts, is governed by the differential equation $$\frac{dP}{dt

Extreme

Variable Gravitational Acceleration Over a Mountain

A hiker lifts a 10 kg backpack up a mountain where the gravitational acceleration decreases linearly

Hard

Work and Energy in a Pulley System

A researcher investigates a two-mass system connected by a massless, frictionless pulley. Mass m1 =

Medium

Work Done by a Variable Exponential Force

A piston is subjected to a variable force described by $$F(x)=500*\exp(-0.5*x)$$ N, where x is in me

Hard

Work Done by a Variable Gravitational Force

An object of mass 2 kg moves from a height of 50 m to 30 m above the Earth's surface. The gravitatio

Extreme

Work-Energy Principle in a Frictional System

A 5 kg block is moving upward along a 10-degree incline of length 5 m with an initial speed of 7 m/s

Medium

Work-Energy Theorem in a Variable Force Field

A particle of mass 2 kg is acted on by a position-dependent force given by $$F(x) = 10 - 2*x$$ N, wh

Medium

Work–Energy and Friction: Analyzing a Sliding Block

A researcher investigates the effect of friction on a sliding block. A 4 kg block is launched horizo

Hard

Work–Energy Experiment in Varying Potential Fields

A researcher studies the motion of an object of mass 4 kg in a potential energy field described by $

Extreme
Unit 4: Systems of Particles and Linear Momentum

Analysis of an Oblique Collision

Two ice skaters are initially at rest on a frictionless ice surface. They push off each other; skate

Medium

Automobile Collision and Impulse Analysis

Two cars are involved in a head-on collision. Car 1 (mass = 1200 kg) is traveling east at 20 m/s, an

Hard

Center of Gravity vs. Center of Mass in a Non-Uniform Rod

A vertical rod of length 1.0 m has a linear density given by $$\lambda(x)=5+2*x$$ (kg/m), where x is

Hard

Center of Mass Calculation of a Non-Homogeneous Beam

A horizontal beam of length $$4$$ m has a linear mass density given by $$\lambda(x) = 5 + 4 * x^2$$

Hard

Center of Mass Determination for a Composite L-Shaped Object

Students perform an experiment to determine the center of mass of an L-shaped, composite board. The

Easy

Center of Mass of a Non-uniform Circular Disk

A thin circular disk of radius $$R$$ has a surface mass density given by $$\sigma(\theta)= k\,(1+\co

Hard

Center of Mass of a System of Particles in 3D Space

Three point masses are located in 3D space with the following properties: - Mass 1: 2 kg at coordin

Easy

Center of Mass of a Variable Density Disk

A circular disk of radius R = 0.5 m has a surface mass density that varies with the radial distance

Extreme

Center of Mass of a Variable Density Rod

A rod of length $$L = 1\,\text{m}$$ has a linear density given by $$\lambda(x) = 5 + 3*x$$ (in kg/m)

Medium

Center of Mass of a Variable Density Two-Dimensional Lamina

Consider a right triangular lamina with a base of length $$b$$ and a height of $$h$$. The density of

Extreme

Center of Mass of a Variable-Density Rod

Consider a thin rod of length $$L=2.0$$ m with a linear density given by $$\lambda(x)=2+3*x$$ (kg/m)

Medium

Center of Mass of an L-Shaped Object

An L-shaped object is formed by joining two uniform rods at one end. One rod is horizontal with a le

Easy

Conservation of Angular Momentum on a Rotating Platform

An ice skater of mass 50 kg spins with arms extended, having a moment of inertia of 3 kg·m² and an a

Easy

Conservation of Linear Momentum in Colliding Carts

Two carts on a frictionless track collide. Cart A (mass = 2 kg) moves to the right with a speed of 3

Easy

Elastic Collision: Conservation of Momentum and Kinetic Energy

Two spheres A and B collide elastically. Sphere A has a mass of 0.6 kg and an initial velocity of $$

Hard

FRQ 8: Center of Mass and Stability

A uniform beam of length $$5 \ m$$ and mass $$50 \ kg$$ is hinged at one end and held horizontally b

Medium

FRQ 13: Critical Analysis: Momentum Experiment

A research study investigating momentum transfer in vehicle collisions reports that the measured mom

Medium

FRQ 15: Center of Mass versus Center of Gravity

A popular science article claims that for a complex-shaped satellite orbiting Earth, the center of m

Medium

Impulse and Average Force on a Punted Football

A football (mass = 0.4 kg) is kicked such that its speed increases from 0 to 30 m/s in 8 ms. (a) Use

Easy

Impulse and Center of Mass in a Soccer Kick

A soccer ball (mass $$0.45\,kg$$) initially at rest is kicked, resulting in a launch speed of $$25\,

Easy

Impulse in a Variable Gravitational Field

An object of mass 2 kg is thrown vertically upward from the ground with an initial velocity of 50 m/

Extreme

Impulse-Momentum Theorem with a Non-constant Force

A 0.2 kg hockey puck is struck by a mallet. The force applied by the mallet varies with time and is

Easy

Inelastic Collision: Combined Motion

A 0.6 kg ball moving at 4.0 m/s collides head-on with a 0.4 kg ball that is initially at rest. The b

Medium

Momentum Analysis of a Variable Mass Rocket

A rocket in space, free from external gravitational forces, expels fuel continuously. Its mass is gi

Extreme

Momentum Analysis of a Variable-Density Moving Rod

A rod of length $$L=1.5\,m$$ has a linear density function $$\lambda(x)=4+3*x$$ (in kg/m) and is mov

Extreme

Momentum Change under a Non-Constant Force

A 1.2-kg block on a frictionless surface is subjected to a time-varying force given by $$F(t) = 12*s

Medium

Momentum Conservation in Glider Collisions on an Air Track

In a laboratory experiment, students investigate conservation of momentum by allowing two gliders to

Medium

Multi-Dimensional Inelastic Collision Analysis

Two particles undergo a perfectly inelastic collision. Particle A (mass = 2 kg) moves with velocity

Extreme

Multi-Stage Rocket Propulsion using Momentum Conservation

A rocket with an initial total mass of 1000 kg expels propellant at a constant exhaust velocity of $

Extreme

Oblique Collision of Ice-Hockey Pucks

Two ice-hockey pucks collide on frictionless ice. Puck A (mass = 0.2 kg) moves east at 5 m/s, and Pu

Extreme

Oscillations: Simple Pendulum Analysis

For a simple pendulum of length 1.5 m undergoing small oscillations, the angular displacement is giv

Easy

Ramp Push Experiment: Variable Force Integration

In a laboratory experiment, a cart on a frictionless ramp is pushed by a force that varies with time

Hard

Sequential Collisions in One Dimension

A 1-kg cart moving at $$4\,\text{m/s}$$ collides elastically with a stationary 0.5-kg cart. Immediat

Medium

Stability Analysis Using Center of Mass on a Pivoted Beam

A uniform beam of length 2.0 m and mass 10 kg is pivoted at one end. A 20 kg mass is suspended from

Medium

Stability Analysis: Center of Mass vs. Center of Gravity

A uniform rectangular block of mass 10 kg with dimensions 0.5 m × 0.3 m × 0.2 m rests on a flat surf

Medium

Stability and Center of Mass of a Structure

A T-shaped structure is formed by joining a horizontal rod (mass $$6\,kg$$, length $$2\,m$$) at its

Easy

Two-Dimensional Elastic Collision Analysis

A 1 kg particle moving horizontally at 4 m/s collides elastically with a 2 kg particle initially at

Hard

Vibrational Motion: Coupled Oscillators

Two masses (m1 = 0.5 kg and m2 = 0.5 kg) are connected by a spring with spring constant k = 200 N/m

Hard
Unit 5: Rotation

Analyzing Variable Torque and Angular Acceleration

A rotor with constant moment of inertia $$I = 4 \text{ kg\cdot m}^2$$ is subjected to a time-varying

Hard

Angular Impulse Analysis

A flywheel is subjected to a time-dependent torque given by $$\tau(t) = 50 * e^{-2*t}$$ N*m for $$t

Medium

Angular Momentum Conservation on a Merry-Go-Round

A child of mass $$m = 30\,kg$$ stands at the edge of a merry-go-round that is modeled as a uniform d

Easy

Angular Momentum in a Variable Moment of Inertia System

A researcher examines the dynamics of a rotating system whose moment of inertia changes with time du

Hard

Angular Momentum Transfer in a Dual-Wheel System

Two wheels, A and B, are coupled so that friction between them eventually brings them to a common an

Extreme

Application and Critical Review of the Parallel Axis Theorem

A disk of radius $$R$$ and mass $$M$$ has a moment of inertia about its center of mass given by $$I_

Hard

Calculus in Determining the Moment of Inertia of a Continuous Object

A researcher is investigating how non-uniform mass distribution affects the moment of inertia of a t

Hard

Calculus-Based Derivation of Torque from Force Distribution

A beam of length $$L$$ is subject to a continuously distributed force. Consider two cases: (i) const

Hard

Combined Translational and Rotational Dynamics

A rolling disk collides elastically with a spring, causing the spring to compress before the disk re

Medium

Comparative Study of Rotational Kinetic Energy in Different Shapes

Design an experiment to compare the rotational kinetic energy in different shaped objects (for examp

Hard

Conservation of Angular Momentum in a Figure Skater's Spin

A figure skater rotates with an initial angular velocity $$\omega_0$$ with her arms extended. When s

Easy

Conservation of Angular Momentum in Explosive Separation

A rotating disk of mass $$M = 5.0 \text{ kg}$$ and radius $$R = 0.5 \text{ m}$$, spinning at $$\omeg

Hard

Correlation Between Torque and Rotational Energy via Calculus

A student designs an experiment to investigate the relationship between applied torque and rotationa

Hard

Differentiating Between Contact and Rolling Without Slip

An experiment is conducted to analyze the motions of objects rolling down an inclined plane. Both th

Medium

Dynamics of a Rotating Rod with Sliding Masses

In this advanced experiment, masses are allowed to slide along a horizontal rod attached to a pivot.

Extreme

Dynamics of a Rotating System with Friction

A rotating disk with moment of inertia $$I$$ is subject to a frictional torque that is proportional

Hard

Energy Conservation in Combined Rotational and Translational Motion

A sphere is made to roll down an incline without slipping, converting gravitational potential energy

Hard

Energy Conversion in a Rolling Cylinder Experiment

A cylinder rolls without slipping down an inclined plane. The experiment examines how gravitational

Medium

Energy Dissipation Due to Friction in a Spinning Disk

A disk is spun up to a high angular velocity and then allowed to slow down due to friction. The expe

Medium

FRQ 9: Experimental Determination of Moment of Inertia

A student performs an experiment to determine the moment of inertia of a uniform disk by measuring i

Hard

FRQ 17: Moment of Inertia of a Non-Uniform Rod

A rod of length L = 2.00 m has a density that varies with position according to $$\rho(x) = \rho_0 *

Extreme

FRQ 20: Time-Dependent Angular Acceleration with External Torque

A flywheel with moment of inertia \(I = 3.00\,kg\cdot m^2\) experiences an exponentially decaying ex

Hard

Impact of Off-Center Mass in Rotational Dynamics

A student attaches a small mass to a rotating disk at a point away from the center to study its effe

Medium

Impulse and Angular Momentum: Impact on a Rotating Disk

A solid disk of mass $$M = 2.0 \text{ kg}$$ and radius $$R = 0.25 \text{ m}$$ is spinning with an in

Medium

Mass Redistribution and Kinetic Energy in Rotating Systems

In a rotating system, a person on a rotating platform moves closer to the axis, reducing the system’

Hard

Rolling Cylinder Down an Incline

A solid cylinder rolls without slipping down an incline. A set of measurements were made at differen

Medium

Rolling Motion on an Inclined Plane

A solid cylinder of mass $$M$$ and radius $$R$$ rolls without slipping down an inclined plane from a

Medium

Rolling with Slipping Transition

A solid sphere of mass $$M$$ and radius $$R$$ is released from rest on an inclined plane with an ang

Hard

Rotational Equilibrium Analysis of a Beam

A beam is in static equilibrium under the influence of several forces applied at different distances

Medium

Rotational Inertia of a Non-Uniform Disk

A disk of radius R has a surface mass density given by $$\sigma(r)= \sigma_0 \left(1+\frac{r}{R}\rig

Extreme

Rotational Kinematics on a Spinning Disk

A rotating disk's angular displacement is measured by the function $$\theta(t) = 0.2\,t^2 + 2\,t$$ (

Medium

Torque and Rotational Inertia in Engine Mechanisms

You are exploring the behavior of torque in a small engine. Design an experiment to measure the engi

Hard

Torque Equilibrium in a Beam

A horizontal beam is pivoted at one end. On the beam, a force F1 = 100 N is applied 0.8 m from the p

Hard
Unit 6: Oscillations

Analyzing the Role of Initial Conditions in SHM

In an experiment on a mass-spring oscillator, students set the system in motion with various initial

Medium

Calculus Approach to Maximum Velocity in SHM

Consider an oscillator whose displacement is given by the sinusoidal function $$y(t) = A \sin(\omega

Easy

Comparing Vertical and Horizontal Oscillations in Mass-Spring Systems

A claim has been made that 'the behavior of a vertical spring-mass oscillator is identical to that o

Medium

Conservation of Mechanical Energy in SHM

A frictionless spring-mass oscillator conserves mechanical energy during its motion. Demonstrate thi

Hard

Data Analysis of Oscillatory Motion with Damping Effects

A student report claims that 'damped oscillations follow the exact same simple harmonic law as undam

Hard

Deriving Equations for a Damped Harmonic Oscillator

An experiment is designed to study the effects of damping in a spring-mass oscillator. This version

Hard

Designing an Experiment on the Inverse Relationship between Mass and Period

A researcher designs an experiment to study the relationship $$T = 2\pi * \sqrt{\frac{m}{k}}$$ in a

Hard

Determination of Maximum Elastic Potential Energy

A researcher is examining the energy stored in a spring when it is displaced from its equilibrium po

Easy

Determining Maximum Speed from Energy Considerations

An oscillator of mass $$m = 0.1 \; kg$$ is attached to a spring with a spring constant of $$k = 250

Easy

Determining Spring Constant from Force-Displacement Data

In a laboratory experiment, the force exerted by a spring is measured for various displacements. The

Easy

Differentiating SHM: Velocity and Acceleration

A block attached to a spring oscillates on a frictionless track and its position is recorded by a se

Medium

Differentiation in SHM: Velocity and Acceleration

An oscillator is described by the function $$y = A * \sin(\omega * t + \phi_0)$$. Investigate the ve

Medium

Dynamic Equilibrium in a Vertical Oscillator

A researcher studies the oscillatory motion of a block attached to a vertical spring. The block is d

Medium

Effect of Mass Variation on SHM

A block attached to a spring oscillates, and the period of oscillation is given by $$T = 2\pi\sqrt{\

Medium

Elastic Potential Energy and Maximum Speed Calculation

A block of mass $$m = 0.10\,\text{kg}$$ is attached to a spring with a spring constant of $$k = 200\

Medium

Energy Conservation in a Spring Oscillator

A block of mass $$m = 0.2\,kg$$ oscillates horizontally on a frictionless surface attached to a spri

Easy

Energy Conservation in Pendulum Motion

A pendulum bob of mass $$m=0.5\,\text{kg}$$ is released from rest at an angle of $$20^\circ$$ from t

Hard

Energy Exchange in SHM

Consider a mass-spring oscillator with displacement given by: $$x(t) = A * \cos(\omega t)$$, with

Hard

Error Analysis in SHM Measurements

A student conducting an experiment on a mass-spring oscillator records the following period measurem

Extreme

Experimental Analysis of SHM Data

The displacement data for a mass-spring system were recorded during a laboratory experiment. The fol

Medium

Experimental Determination of Spring Constant

Utilize experimental data from a mass–spring oscillator to determine the spring constant.

Easy

Experimental Verification of Hooke's Law

A physics lab setup involves a horizontal spring-mass system to test Hooke’s law. In this experiment

Easy

Fourier Analysis of Oscillation Data

In an advanced experiment, the oscillation of a spring-mass system is recorded and analyzed using Fo

Extreme

FRQ 6: Sinusoidal Description of SHM

A simple harmonic oscillator has an amplitude of $$A = 3.0\ cm$$ and a frequency of $$f = 4.0\ Hz$$.

Medium

FRQ 8: Energy Exchanges in SHM

A graph of elastic potential energy vs. displacement for a spring is provided. Use calculus to deriv

Medium

FRQ 9: Effect of Spring Constant on Frequency

For a mass-spring oscillator, the frequency is given by $$f = \frac{1}{2\pi}\sqrt{\frac{k}{m}}$$. An

Easy

FRQ 10: Calculus Integration for Work Done in a Spring

Force measurements during the stretching of a spring were recorded as a function of displacement. Us

Medium

FRQ 14: Impact of Initial Conditions on SHM

An oscillator is released from an initial displacement of 0.05 m with an initial upward velocity of

Hard

FRQ 14: Work Done by a Spring via Integration

Using calculus, derive an expression for the work done in stretching a spring from its natural lengt

Hard

FRQ 18: Comparing Oscillatory Systems

Compare the dynamics of a mass-spring system and a simple pendulum. Answer the following:

Medium

FRQ1: Hooke’s Law in a Horizontal Spring-Mass System

A horizontal spring with force constant $$k = 250\,N/m$$ is fixed at one end. A block attached to th

Easy

FRQ6: Calculus Derivation of Velocity and Acceleration in SHM

For a mass undergoing simple harmonic motion described by the displacement function $$x(t)= A\sin(\o

Hard

Lagrangian Mechanics of the Simple Harmonic Oscillator

A researcher employs Lagrangian mechanics to analyze a mass-spring oscillator. Consider a mass $$m$$

Extreme

Measuring g with a Simple Pendulum

A researcher uses a simple pendulum to measure the acceleration due to gravity. The length of the pe

Easy

Oscillations of a Liquid Column in a U-tube

A U-tube containing a liquid with density $$\rho$$ exhibits oscillatory motion when the liquid is di

Hard

Oscillatory Motion of a Block on a Horizontal Spring

A block of mass $$m = 0.8 \; kg$$ is attached to a horizontal spring with a spring constant of $$k =

Medium

Pendulum Energy Dynamics

Analyze the energy dynamics of a simple pendulum using both theoretical derivations and numerical ca

Medium

Pendulum Motion Experimental Analysis

A simple pendulum experiment is used to measure the period of oscillation. A bob is attached to a ma

Easy

Pendulum Motion: Small-Angle Approximation

A simple pendulum of length $$L = 0.80\,m$$ is released from a small angle. (a) Using the small-angl

Easy

Pendulum Period and Data Analysis

Explore the period of a simple pendulum and compare experimental data with theoretical predictions.

Easy

Period Estimation Using Calculus in Simple Pendulum Experiments

An experimental study reports that integrating the motion equations of a simple pendulum leads to pe

Hard

SHM with Phase Shift: Initial Conditions Analysis

An oscillator is described by the equation: $$y(t) = A * \sin(2\pi * f * t + \phi)$$ In a particul

Hard

Simple Pendulum Energy Analysis

Consider a simple pendulum of length $$L$$ and mass $$m$$ undergoing small oscillations. Answer the

Medium

Spring Force and Energy Analysis

A researcher is studying the behavior of a horizontal spring. The spring has a natural length of 12

Easy

Spring Force Investigation

A researcher investigates the force exerted by a spring using Hooke's law. The aim is to verify the

Easy

Stress Testing of Oscillatory Limits

In an advanced experiment, a student increases the amplitude of oscillation for a spring–mass system

Extreme

Time-Dependent Analysis of Oscillatory Motion

An oscillator's displacement is given by the function $$x(t)=0.03 * \cos(12*t)$$ (with $$x$$ in mete

Medium

Time-Derivative Analysis of Displacement in SHM

An experiment aims to determine the velocity of a mass undergoing simple harmonic motion by calculat

Easy

Vertical Mass-Spring Oscillator: Equilibrium and Oscillations

A 2.0-kg mass is attached to the end of a vertical spring with a force constant $$k = 250\,N/m$$. Th

Medium

Vertical Oscillations of a Mass-Spring System

A vertical spring with a spring constant of $$k = 150\,\text{N/m}$$ supports a block of mass $$m = 2

Medium

Vertical Oscillations on a Spring

A block of mass $$m = 1.5\,kg$$ is attached to a vertical spring with a force constant of $$k = 300\

Medium

Vertical Spring–Block Oscillator Dynamics

Investigate the dynamics of a block oscillating vertically on a spring.

Medium
Unit 7: Gravitation

Analysis of Orbital Transfer Maneuvers Using Calculus

A spacecraft is initially in a circular orbit of radius $$ r_1 $$ and is to be transferred to a circ

Hard

Application of Kepler's Third Law in the Solar System

A table below provides the semi-major axis and orbital period for several planets. Use this data to

Medium

Average Orbital Energy and Angular Momentum

For an orbiting satellite, the specific orbital energy and angular momentum are key conserved quanti

Hard

Barycenter Determination in a Sun-Planet Analog with Magnetic Models

A lab experiment simulates the Sun-Earth system using scaled models equipped with magnetic component

Hard

Comparative Analysis of Gravitational Forces

Using the data provided, compare the gravitational forces between various pairs of celestial bodies.

Medium

Comparison of Gravitational and Centripetal Forces

For a satellite in a stable circular orbit, investigate the balance between gravitational and centri

Easy

Designing a Cavendish Experiment to Measure the Gravitational Constant

A student plans to design a version of the Cavendish experiment to measure the gravitational constan

Hard

Determination of Gravitational Parameter (GM) from Satellite Orbits

An observational study is undertaken to determine the gravitational parameter (GM) of a planet by an

Medium

Determining Gravitational Potential from Force Field Data

An experiment measures the gravitational force as a function of distance, providing data described b

Hard

Dynamic Modeling of Planetary Motion in a Binary Star System

Consider a binary star system where two stars of comparable mass orbit their common center of mass i

Extreme

Energy Conservation in Gravitational Fields: Application to Roller Coaster Dynamics

Although gravitational potential energy is most famously applied in celestial mechanics, the concept

Hard

Free Fall with Air Resistance: Integral Approach

A free-fall experiment is performed in a laboratory where a sphere is dropped and its position is re

Easy

FRQ 3: Center of Mass in the Sun-Earth System

In the Sun-Earth system, although both bodies orbit their common center of mass (barycenter), the di

Easy

FRQ 8: Elliptical Orbit – Perihelion and Aphelion Distances

An object travels in an elliptical orbit with a semimajor axis $$a$$ and eccentricity $$e$$. Answer

Medium

Gravitational Potential Energy Change for a Satellite

A satellite is moved from a lower orbit to a higher orbit around a planet. Gravitational potential e

Hard

Gravitational Potential Energy Differences in Multi-Body Systems

Consider a test mass moving in the gravitational field of two bodies, $$M_1$$ and $$M_2$$. Answer th

Medium

Gravitational Potential Energy Measurement on a Roller Coaster

An amusement park ride features a roller coaster that reaches a maximum height of $$50 \;m$$ above t

Medium

Gravitational Potential Energy Variations near Earth

An object of mass $$m$$ is elevated in Earth's gravitational field. (a) Derive the expression $$PE =

Medium

Gravity Assist in Three-Body Dynamics

In a gravitational slingshot (gravity assist) maneuver, a spacecraft can change its velocity by inte

Extreme

Investigating Tidal Forces and Differential Gravity Effects

Consider a moon orbiting a planet, where tidal forces arise due to the variation in gravitational fo

Extreme

Investigating Tidal Forces in a Binary Star System

Tidal forces in binary star systems can have significant effects on the stars’ structures. Answer th

Extreme

Kepler's Third Law and Satellite Orbits

Using the provided data for satellite orbits, analyze Kepler’s Third Law. Determine the relationship

Medium

Newton vs. Einstein: Conceptual Analysis of Gravity

Compare and contrast Newton's Law of Gravitation with Einstein's theory of General Relativity. Answe

Extreme

Orbit Transfer and Hohmann Transfer Orbits

A spacecraft is transitioning between two circular orbits using a Hohmann transfer orbit. (a) Descri

Hard

Orbital Decay Due to Atmospheric Drag

A satellite in low Earth orbit experiences atmospheric drag, resulting in a gradual decrease of its

Hard

Orbital Energy Analysis in Elliptical Orbits

The total mechanical energy of a satellite in an elliptical orbit is the sum of its kinetic and grav

Extreme

Pendulum Orbital Analog and Kepler's Third Law

In a classroom experiment, a simple pendulum is used as an analog to planetary orbits in order to va

Medium

Perturbation Analysis of Satellite Orbits

Study the graph showing small deviations from a nominal circular orbit of a satellite. Analyze the p

Extreme

Predicting Orbital Decay Due to Atmospheric Drag

A low Earth orbit satellite experiences orbital decay due to atmospheric drag. Assume that the drag

Hard

Verifying Kepler's Second Law and Angular Momentum Conservation

Kepler’s Second Law states that a line joining a planet and the Sun sweeps out equal areas during eq

Medium

Work Done in a Variable Gravitational Field

An object of mass $$m$$ is moved radially from a distance $$r_1$$ to $$r_2$$ in the gravitational fi

Medium

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FAQWe thought you might have some questions...
Where can I find practice free response questions for the AP Physics C: Mechanics exam?
The free response section of each AP exam varies slightly, so you’ll definitely want to practice that before stepping into that exam room. Here are some free places to find practice FRQs :
  • Of course, make sure to run through College Board's past FRQ questions!
  • Once you’re done with those go through all the questions in the AP Physics C: MechanicsFree Response Room. You can answer the question and have it grade you against the rubric so you know exactly where to improve.
  • Reddit it also a great place to find AP free response questions that other students may have access to.
How do I practice for AP AP Physics C: Mechanics Exam FRQs?
Once you’re done reviewing your study guides, find and bookmark all the free response questions you can find. The question above has some good places to look! while you’re going through them, simulate exam conditions by setting a timer that matches the time allowed on the actual exam. Time management is going to help you answer the FRQs on the real exam concisely when you’re in that time crunch.
What are some tips for AP Physics C: Mechanics free response questions?
Before you start writing out your response, take a few minutes to outline the key points you want to make sure to touch on. This may seem like a waste of time, but it’s very helpful in making sure your response effectively addresses all the parts of the question. Once you do your practice free response questions, compare them to scoring guidelines and sample responses to identify areas for improvement. When you do the free response practice on the AP Physics C: Mechanics Free Response Room, there’s an option to let it grade your response against the rubric and tell you exactly what you need to study more.
How do I answer AP Physics C: Mechanics free-response questions?
Answering AP Physics C: Mechanics free response questions the right way is all about practice! As you go through the AP AP Physics C: Mechanics Free Response Room, treat it like a real exam and approach it this way so you stay calm during the actual exam. When you first see the question, take some time to process exactly what it’s asking. Make sure to also read through all the sub-parts in the question and re-read the main prompt, making sure to circle and underline any key information. This will help you allocate your time properly and also make sure you are hitting all the parts of the question. Before you answer each question, note down the key points you want to hit and evidence you want to use (where applicable). Once you have the skeleton of your response, writing it out will be quick, plus you won’t make any silly mistake in a rush and forget something important.