1. Kinematics1.1 Scalars and Vectors0/01.1.1 Scalars and Vector Quantities1.1.2 Representing Vectors Visually1.1.3 Scalar and Vector Examples in Mechanics1.1.4 Unit Vector Notation and Position Vectors1.1.5 Resultant Vectors and Signs in One Dimension1.2 Displacement, Velocity, and Acceleration0/01.2.1 The Object Model and Displacement1.2.2 Average Velocity1.2.3 Average Acceleration1.2.4 What It Means for an Object to Accelerate1.2.5 Instantaneous Position, Velocity, and Acceleration1.3 Representing Motion0/01.3.1 Ways to Represent Motion1.3.2 Constant-Acceleration Kinematic Equations1.3.3 Vertical Motion Near Earth's Surface1.3.4 Slopes on Position-Time and Velocity-Time Graphs1.3.5 Areas on Velocity-Time and Acceleration-Time Graphs1.4 Reference Frames and Relative Motion0/01.4.1 Choosing a Reference Frame1.4.2 Converting Measurements Between Frames1.4.3 Relative Velocity and Inertial Frames1.5 Motion in Two or Three Dimensions0/01.5.1 Breaking Multidimensional Motion into Components1.5.2 Velocity and Acceleration in Different Dimensions1.5.3 Independence of Perpendicular Components1.5.4 Projectile Motion as a Special Case1. Kinematics1.1 Scalars and Vectors0/01.1.1 Scalars and Vector Quantities1.1.2 Representing Vectors Visually1.1.3 Scalar and Vector Examples in Mechanics1.1.4 Unit Vector Notation and Position Vectors1.1.5 Resultant Vectors and Signs in One Dimension1.2 Displacement, Velocity, and Acceleration0/01.2.1 The Object Model and Displacement1.2.2 Average Velocity1.2.3 Average Acceleration1.2.4 What It Means for an Object to Accelerate1.2.5 Instantaneous Position, Velocity, and Acceleration1.3 Representing Motion0/01.3.1 Ways to Represent Motion1.3.2 Constant-Acceleration Kinematic Equations1.3.3 Vertical Motion Near Earth's Surface1.3.4 Slopes on Position-Time and Velocity-Time Graphs1.3.5 Areas on Velocity-Time and Acceleration-Time Graphs1.4 Reference Frames and Relative Motion0/01.4.1 Choosing a Reference Frame1.4.2 Converting Measurements Between Frames1.4.3 Relative Velocity and Inertial Frames1.5 Motion in Two or Three Dimensions0/01.5.1 Breaking Multidimensional Motion into Components1.5.2 Velocity and Acceleration in Different Dimensions1.5.3 Independence of Perpendicular Components1.5.4 Projectile Motion as a Special Case2. Force and Translational Dynamics2.1 Systems and Center of Mass0/02.1.1 Defining a System in Mechanics2.1.2 Open, Closed, and Changing Systems2.1.3 Internal Structure and System Behavior2.1.4 Symmetry and the Center of Mass2.1.5 Calculating Center of Mass for Discrete Objects2.1.6 Center of Mass for Continuous Mass Distributions2.2 Forces and Free-Body Diagrams0/02.2.1 Forces as Interactions Between Objects2.2.2 Why an Object Cannot Push Itself2.2.3 Contact Forces and Their Origin2.2.4 Drawing Accurate Free-Body Diagrams2.2.5 Choosing Axes from a Free-Body Diagram2.3 Newton’s Third Law0/02.3.1 Action-Reaction Force Pairs2.3.2 Internal Forces and Center-of-Mass Motion2.3.3 Tension in Strings, Cables, and Chains2.3.4 Ideal Strings, Massive Strings, and Ideal Pulleys2.4 Newton’s First Law0/02.4.1 Net Force and Translational Equilibrium2.4.2 Constant Velocity and Newton’s First Law2.4.3 Balanced in One Direction, Unbalanced in Another2.4.4 Inertial Reference Frames2.5 Newton’s Second Law0/02.5.1 Unbalanced Forces and Changing Motion2.5.2 Newton’s Second Law and Center-of-Mass Acceleration2.5.3 Applying F = ma to Physical Systems2.6 Gravitational Force0/02.6.1 Universal Gravitation Between Masses2.6.2 Direction of Gravitational Force and Field2.6.3 Gravitational Field Strength and Weight2.6.4 When Gravity Can Be Treated as Constant2.6.5 Apparent Weight, Weightlessness, and the Equivalence Principle2.6.6 Inertial Mass, Gravitational Mass, and Spherical Mass Distributions2.7 Kinetic and Static Friction0/02.7.1 What Kinetic Friction Does2.7.2 Magnitude of Kinetic Friction2.7.3 Normal Force in Friction Problems2.7.4 How Static Friction Prevents Motion2.7.5 Maximum Static Friction and Comparing Coefficients2.8 Spring Forces0/02.8.1 Ideal and Nonideal Springs2.8.2 Hooke’s Law and Spring Force Direction2.8.3 Equivalent Spring Constant: Core Idea2.8.4 Springs in Series2.8.5 Springs in Parallel2.9 Resistive Forces0/02.9.1 Modeling Resistive Forces2.9.2 Using Newton’s Second Law with Drag2.9.3 From Velocity Functions to Position and Acceleration2.9.4 Exponential Motion with Linear Drag2.9.5 Terminal Velocity2.10 Circular Motion0/02.10.1 Centripetal Acceleration in Circular Motion2.10.2 Forces That Produce Circular Motion2.10.3 Banked Curves and Conical Pendulums2.10.4 Tangential and Net Acceleration2.10.5 Period, Frequency, and Uniform Circular Motion2.10.6 Circular Orbits and Kepler’s Third Law2. Force and Translational Dynamics2.1 Systems and Center of Mass0/02.1.1 Defining a System in Mechanics2.1.2 Open, Closed, and Changing Systems2.1.3 Internal Structure and System Behavior2.1.4 Symmetry and the Center of Mass2.1.5 Calculating Center of Mass for Discrete Objects2.1.6 Center of Mass for Continuous Mass Distributions2.2 Forces and Free-Body Diagrams0/02.2.1 Forces as Interactions Between Objects2.2.2 Why an Object Cannot Push Itself2.2.3 Contact Forces and Their Origin2.2.4 Drawing Accurate Free-Body Diagrams2.2.5 Choosing Axes from a Free-Body Diagram2.3 Newton’s Third Law0/02.3.1 Action-Reaction Force Pairs2.3.2 Internal Forces and Center-of-Mass Motion2.3.3 Tension in Strings, Cables, and Chains2.3.4 Ideal Strings, Massive Strings, and Ideal Pulleys2.4 Newton’s First Law0/02.4.1 Net Force and Translational Equilibrium2.4.2 Constant Velocity and Newton’s First Law2.4.3 Balanced in One Direction, Unbalanced in Another2.4.4 Inertial Reference Frames2.5 Newton’s Second Law0/02.5.1 Unbalanced Forces and Changing Motion2.5.2 Newton’s Second Law and Center-of-Mass Acceleration2.5.3 Applying F = ma to Physical Systems2.6 Gravitational Force0/02.6.1 Universal Gravitation Between Masses2.6.2 Direction of Gravitational Force and Field2.6.3 Gravitational Field Strength and Weight2.6.4 When Gravity Can Be Treated as Constant2.6.5 Apparent Weight, Weightlessness, and the Equivalence Principle2.6.6 Inertial Mass, Gravitational Mass, and Spherical Mass Distributions2.7 Kinetic and Static Friction0/02.7.1 What Kinetic Friction Does2.7.2 Magnitude of Kinetic Friction2.7.3 Normal Force in Friction Problems2.7.4 How Static Friction Prevents Motion2.7.5 Maximum Static Friction and Comparing Coefficients2.8 Spring Forces0/02.8.1 Ideal and Nonideal Springs2.8.2 Hooke’s Law and Spring Force Direction2.8.3 Equivalent Spring Constant: Core Idea2.8.4 Springs in Series2.8.5 Springs in Parallel2.9 Resistive Forces0/02.9.1 Modeling Resistive Forces2.9.2 Using Newton’s Second Law with Drag2.9.3 From Velocity Functions to Position and Acceleration2.9.4 Exponential Motion with Linear Drag2.9.5 Terminal Velocity2.10 Circular Motion0/02.10.1 Centripetal Acceleration in Circular Motion2.10.2 Forces That Produce Circular Motion2.10.3 Banked Curves and Conical Pendulums2.10.4 Tangential and Net Acceleration2.10.5 Period, Frequency, and Uniform Circular Motion2.10.6 Circular Orbits and Kepler’s Third Law3. Work, Energy, and PowerPremium3.1 Translational Kinetic Energy0/03.1.1 Defining Translational Kinetic Energy3.1.2 Kinetic Energy as a Scalar3.1.3 Kinetic Energy and Reference Frames3.2 Work0/03.2.1 What Work Means in Mechanics3.2.2 Conservative Forces, Path Independence, and Potential Energy3.2.3 Nonconservative Forces and Dissipated Mechanical Energy3.2.4 Calculating Work with Dot Products and Integrals3.2.5 The Work-Energy Theorem and Force-Displacement Graphs3.3 Potential Energy0/03.3.1 Potential Energy in Systems of Interacting Objects3.3.2 Choosing the Zero of Potential Energy3.3.3 Relating Potential Energy to Conservative Force3.3.4 Reading Forces and Equilibrium from U-x Graphs3.3.5 Elastic and Gravitational Potential Energy Models3.3.6 Near-Earth Gravitational Energy and Multi-Object Systems3.4 Conservation of Energy0/03.4.1 Energy in Single-Object and Multi-Object Systems3.4.2 Mechanical Energy and Energy Accounting3.4.3 When Total Energy Stays Constant3.4.4 When Mechanical Energy Is Conserved3.4.5 System Choice, External Work, and Dissipation3.5 Power0/03.5.1 Defining Power as the Rate of Energy Change3.5.2 Average Power from Energy and Work3.5.3 Instantaneous Power and the Force-Velocity Relationship3. Work, Energy, and PowerPremium3.1 Translational Kinetic Energy0/03.1.1 Defining Translational Kinetic Energy3.1.2 Kinetic Energy as a Scalar3.1.3 Kinetic Energy and Reference Frames3.2 Work0/03.2.1 What Work Means in Mechanics3.2.2 Conservative Forces, Path Independence, and Potential Energy3.2.3 Nonconservative Forces and Dissipated Mechanical Energy3.2.4 Calculating Work with Dot Products and Integrals3.2.5 The Work-Energy Theorem and Force-Displacement Graphs3.3 Potential Energy0/03.3.1 Potential Energy in Systems of Interacting Objects3.3.2 Choosing the Zero of Potential Energy3.3.3 Relating Potential Energy to Conservative Force3.3.4 Reading Forces and Equilibrium from U-x Graphs3.3.5 Elastic and Gravitational Potential Energy Models3.3.6 Near-Earth Gravitational Energy and Multi-Object Systems3.4 Conservation of Energy0/03.4.1 Energy in Single-Object and Multi-Object Systems3.4.2 Mechanical Energy and Energy Accounting3.4.3 When Total Energy Stays Constant3.4.4 When Mechanical Energy Is Conserved3.4.5 System Choice, External Work, and Dissipation3.5 Power0/03.5.1 Defining Power as the Rate of Energy Change3.5.2 Average Power from Energy and Work3.5.3 Instantaneous Power and the Force-Velocity Relationship4. Linear MomentumPremium4.1 Linear Momentum0/04.1.1 Defining Linear Momentum4.1.2 Momentum as a Vector Quantity4.1.3 Using Momentum in Collisions and Explosions4.1.4 Collision Models and Object Systems4.1.5 Explosion Models in Isolated Systems4.2 Change in Momentum and Impulse0/04.2.1 Force as the Rate of Change of Momentum4.2.2 Impulse from Force Over Time4.2.3 The Direction of Impulse4.2.4 Reading Force-Time and Momentum-Time Graphs4.2.5 Change in Momentum and the Impulse-Momentum Theorem4.2.6 Connecting Impulse to Newton's Second Law4.3 Conservation of Linear Momentum0/04.3.1 Systems, Total Momentum, and Center of Mass4.3.2 Calculating and Interpreting Center-of-Mass Velocity4.3.3 When Momentum Stays Constant4.3.4 Internal Momentum Changes and Newton's Third Law4.3.5 Impulse, System Choice, and Solving Interactions4.3.6 Applying Conservation in Collisions and Explosions4.4 Elastic and Inelastic Collisions0/04.4.1 What Makes a Collision Elastic4.4.2 Kinetic Energy Changes for Individual Objects4.4.3 What Makes a Collision Inelastic4.4.4 Where the Missing Kinetic Energy Goes4.4.5 Perfectly Inelastic Collisions4. Linear MomentumPremium4.1 Linear Momentum0/04.1.1 Defining Linear Momentum4.1.2 Momentum as a Vector Quantity4.1.3 Using Momentum in Collisions and Explosions4.1.4 Collision Models and Object Systems4.1.5 Explosion Models in Isolated Systems4.2 Change in Momentum and Impulse0/04.2.1 Force as the Rate of Change of Momentum4.2.2 Impulse from Force Over Time4.2.3 The Direction of Impulse4.2.4 Reading Force-Time and Momentum-Time Graphs4.2.5 Change in Momentum and the Impulse-Momentum Theorem4.2.6 Connecting Impulse to Newton's Second Law4.3 Conservation of Linear Momentum0/04.3.1 Systems, Total Momentum, and Center of Mass4.3.2 Calculating and Interpreting Center-of-Mass Velocity4.3.3 When Momentum Stays Constant4.3.4 Internal Momentum Changes and Newton's Third Law4.3.5 Impulse, System Choice, and Solving Interactions4.3.6 Applying Conservation in Collisions and Explosions4.4 Elastic and Inelastic Collisions0/04.4.1 What Makes a Collision Elastic4.4.2 Kinetic Energy Changes for Individual Objects4.4.3 What Makes a Collision Inelastic4.4.4 Where the Missing Kinetic Energy Goes4.4.5 Perfectly Inelastic Collisions5. Torque and Rotational DynamicsPremium5.1 Rotational Kinematics0/05.1.1 Angular Displacement and Radians5.1.2 Rigid Systems and Rotation Sign Conventions5.1.3 Angular Velocity and Angular Acceleration5.1.4 Rotational-Linear Kinematics Analogies and Graphs5.1.5 Constant Angular Acceleration Equations5.2 Connecting Linear and Rotational Motion0/05.2.1 Arc Length and Angular Displacement5.2.2 Tangential Speed and Tangential Acceleration5.2.3 Shared Angular Motion in a Rigid System5.3 Torque0/05.3.1 What Produces Torque5.3.2 Lever Arm and Line of Action5.3.3 Force Diagrams for Rigid Systems5.3.4 Torque as a Cross Product and Direction5.4 Rotational Inertia0/05.4.1 Rotational Inertia as Resistance to Change5.4.2 Rotational Inertia of a Point Mass and Collections5.4.3 Calculating Rotational Inertia with Calculus5.4.4 Center of Mass and Minimum Rotational Inertia5.4.5 Parallel Axis Theorem and Mass Distribution5.5 Rotational Equilibrium and Newton’s First Law in Rotational Form0/05.5.1 Conditions for Rotational Equilibrium5.5.2 Rotational and Translational Equilibrium Compared5.5.3 Using Diagrams and the Rotational First Law5.6 Newton’s Second Law in Rotational Form0/05.6.1 When Angular Velocity Changes5.6.2 Net Torque, Angular Acceleration, and Rotational Inertia5.6.3 Combining Linear and Rotational Analysis5. Torque and Rotational DynamicsPremium5.1 Rotational Kinematics0/05.1.1 Angular Displacement and Radians5.1.2 Rigid Systems and Rotation Sign Conventions5.1.3 Angular Velocity and Angular Acceleration5.1.4 Rotational-Linear Kinematics Analogies and Graphs5.1.5 Constant Angular Acceleration Equations5.2 Connecting Linear and Rotational Motion0/05.2.1 Arc Length and Angular Displacement5.2.2 Tangential Speed and Tangential Acceleration5.2.3 Shared Angular Motion in a Rigid System5.3 Torque0/05.3.1 What Produces Torque5.3.2 Lever Arm and Line of Action5.3.3 Force Diagrams for Rigid Systems5.3.4 Torque as a Cross Product and Direction5.4 Rotational Inertia0/05.4.1 Rotational Inertia as Resistance to Change5.4.2 Rotational Inertia of a Point Mass and Collections5.4.3 Calculating Rotational Inertia with Calculus5.4.4 Center of Mass and Minimum Rotational Inertia5.4.5 Parallel Axis Theorem and Mass Distribution5.5 Rotational Equilibrium and Newton’s First Law in Rotational Form0/05.5.1 Conditions for Rotational Equilibrium5.5.2 Rotational and Translational Equilibrium Compared5.5.3 Using Diagrams and the Rotational First Law5.6 Newton’s Second Law in Rotational Form0/05.6.1 When Angular Velocity Changes5.6.2 Net Torque, Angular Acceleration, and Rotational Inertia5.6.3 Combining Linear and Rotational Analysis6. Energy and Momentum of Rotating SystemsPremium6.1 Rotational Kinetic Energy0/06.1.1 Defining Rotational Kinetic Energy6.1.2 Why Moment of Inertia Matters6.1.3 Translational and Rotational Kinetic Energy6.1.4 Rotation with a Stationary Center of Mass6.1.5 Rotational Kinetic Energy as a Scalar6.2 Torque and Work0/06.2.1 How Torque Transfers Energy6.2.2 Work Done by a Constant Torque6.2.3 Work Done by a Variable Torque6.2.4 Reading Torque-Position Graphs6.3 Angular Momentum and Angular Impulse0/06.3.1 Angular Momentum of a Rigid System6.3.2 Angular Momentum of a Moving Object6.3.3 Why the Choice of Axis Matters6.3.4 Defining Angular Impulse6.3.5 Direction and Graphs for Angular Impulse6.3.6 Angular Impulse-Momentum Theorem6.4 Conservation of Angular Momentum0/06.4.1 Total Angular Momentum of a System6.4.2 How Interactions Change Angular Momentum6.4.3 Internal Impulses and Newton’s Third Law6.4.4 Changing Shape Without Changing Angular Momentum6.4.5 Angular Impulse and System Change6.4.6 When Angular Momentum Is Conserved6.5 Rolling0/06.5.1 Total Kinetic Energy in Rolling Motion6.5.2 The Rolling-Without-Slipping Condition6.5.3 Acceleration in Rolling Motion6.5.4 Why Static Friction Does Not Remove Energy6.5.5 What Changes When an Object Slips6.5.6 Kinetic Friction and Energy Loss6.6 Motion of Orbiting Satellites0/06.6.1 A Satellite-Central Body System6.6.2 Conservation Laws in Orbits6.6.3 What Stays Constant in Circular Orbits6.6.4 What Changes in Elliptical Orbits6.6.5 Gravitational Potential Energy and Circular-Orbit Energy6.6.6 Escape Velocity6. Energy and Momentum of Rotating SystemsPremium6.1 Rotational Kinetic Energy0/06.1.1 Defining Rotational Kinetic Energy6.1.2 Why Moment of Inertia Matters6.1.3 Translational and Rotational Kinetic Energy6.1.4 Rotation with a Stationary Center of Mass6.1.5 Rotational Kinetic Energy as a Scalar6.2 Torque and Work0/06.2.1 How Torque Transfers Energy6.2.2 Work Done by a Constant Torque6.2.3 Work Done by a Variable Torque6.2.4 Reading Torque-Position Graphs6.3 Angular Momentum and Angular Impulse0/06.3.1 Angular Momentum of a Rigid System6.3.2 Angular Momentum of a Moving Object6.3.3 Why the Choice of Axis Matters6.3.4 Defining Angular Impulse6.3.5 Direction and Graphs for Angular Impulse6.3.6 Angular Impulse-Momentum Theorem6.4 Conservation of Angular Momentum0/06.4.1 Total Angular Momentum of a System6.4.2 How Interactions Change Angular Momentum6.4.3 Internal Impulses and Newton’s Third Law6.4.4 Changing Shape Without Changing Angular Momentum6.4.5 Angular Impulse and System Change6.4.6 When Angular Momentum Is Conserved6.5 Rolling0/06.5.1 Total Kinetic Energy in Rolling Motion6.5.2 The Rolling-Without-Slipping Condition6.5.3 Acceleration in Rolling Motion6.5.4 Why Static Friction Does Not Remove Energy6.5.5 What Changes When an Object Slips6.5.6 Kinetic Friction and Energy Loss6.6 Motion of Orbiting Satellites0/06.6.1 A Satellite-Central Body System6.6.2 Conservation Laws in Orbits6.6.3 What Stays Constant in Circular Orbits6.6.4 What Changes in Elliptical Orbits6.6.5 Gravitational Potential Energy and Circular-Orbit Energy6.6.6 Escape Velocity7. OscillationsPremium7.1 Defining Simple Harmonic Motion (SHM)0/07.1.1 Periodic Motion and the Special Case of SHM7.1.2 Restoring Force and Displacement7.1.3 Why the Force Is Called Restoring7.1.4 Equilibrium Position in Oscillating Systems7.2 Frequency and Period of SHM0/07.2.1 Period, Frequency, and Angular Frequency7.2.2 Period of a Mass-Spring Oscillator7.2.3 Period of a Simple Pendulum7.3 Representing and Analyzing SHM0/07.3.1 Sinusoidal Models for Displacement7.3.2 Minima, Maxima, and Zeros in SHM7.3.3 The Differential Equation for SHM7.3.4 Using Phase Constants to Describe Motion7.3.5 Maximum Speed and Maximum Acceleration7.3.6 Resonance, Amplitude, and Graphical Analysis7.4 Energy of Simple Harmonic Oscillators0/07.4.1 Total Mechanical Energy in SHM7.4.2 Conservation of Energy in Oscillators7.4.3 When Kinetic Energy Is Greatest7.4.4 When Potential Energy Is Greatest7.4.5 Amplitude and Total Energy7.5 Simple and Physical Pendulums0/07.5.1 What Makes a Physical Pendulum7.5.2 Period of a Physical Pendulum7.5.3 Restoring Torque and the Small-Angle Approximation7.5.4 Rotational SHM Equation for Pendulums7.5.5 The Simple Pendulum as a Special Case7.5.6 Torsion Pendulums and Angular SHM7. OscillationsPremium7.1 Defining Simple Harmonic Motion (SHM)0/07.1.1 Periodic Motion and the Special Case of SHM7.1.2 Restoring Force and Displacement7.1.3 Why the Force Is Called Restoring7.1.4 Equilibrium Position in Oscillating Systems7.2 Frequency and Period of SHM0/07.2.1 Period, Frequency, and Angular Frequency7.2.2 Period of a Mass-Spring Oscillator7.2.3 Period of a Simple Pendulum7.3 Representing and Analyzing SHM0/07.3.1 Sinusoidal Models for Displacement7.3.2 Minima, Maxima, and Zeros in SHM7.3.3 The Differential Equation for SHM7.3.4 Using Phase Constants to Describe Motion7.3.5 Maximum Speed and Maximum Acceleration7.3.6 Resonance, Amplitude, and Graphical Analysis7.4 Energy of Simple Harmonic Oscillators0/07.4.1 Total Mechanical Energy in SHM7.4.2 Conservation of Energy in Oscillators7.4.3 When Kinetic Energy Is Greatest7.4.4 When Potential Energy Is Greatest7.4.5 Amplitude and Total Energy7.5 Simple and Physical Pendulums0/07.5.1 What Makes a Physical Pendulum7.5.2 Period of a Physical Pendulum7.5.3 Restoring Torque and the Small-Angle Approximation7.5.4 Rotational SHM Equation for Pendulums7.5.5 The Simple Pendulum as a Special Case7.5.6 Torsion Pendulums and Angular SHM