In this video Paul Andersen explains how the kinetic energy of an object if due to the motion of an object. Objects can have kinetic energy but they cannot have potential energy unless they are part of a system. He then explains how to...

In this video Paul Andersen explains how the angular momentum of an object if a product of the rotational inertia and the angular velocity. The rotational inertia depends on the mass, radius and shape of the rotating objects. A sample...

In the third act of "Swan Lake", the Black Swan pulls off a seemingly endless series of turns, bobbing up and down on one pointed foot and spinning around and around and around thirty-two times. How is this move - which is called a...

In this video Paul Andersen explains how a rotating system will have several quantities; including torque, angular velocity, angular acceleration and angular momentum. Each of these quantities have a vector property that can be...

In this video Paul Andersen explains rotating object have angular momentum. The angular momentum of a point object is the product of the distant from the center of rotation and the linear momentum. The angular momentum of an extended...

In this video Paul Andersen explains how a net torque acting on an object will create rotational motion. This motion can be described by the angular displacement, angular velocity, and angular acceleration. The linear velocity can be...

Get ready to crush the AP Physics 1 exam with this complete 30-minute review of the entire course! This video covers every major topic from Units 1 through 8, including kinematics, dynamics, energy, momentum, rotation, harmonic motion,...

This video explains how the removal of mass affects an object's rotational inertia, demonstrating the calculation of percentage decrease in rotational inertia when an innermost or outermost particle is removed.

This lesson explores the relationship between work done by torque and a body's rotational kinetic energy. It covers the application of the work-kinetic energy theorem for rotating bodies, explains how to calculate work done by constant...

This content explains how to calculate the rotational inertia and angular momentum of a rigid structure composed of a circular hoop and a square frame made of thin rods. It demonstrates the application of the parallel-axis theorem to...

This content analyzes the motion of a hollow sphere rolling without slipping up an incline. It demonstrates how to determine the initial rotational and translational kinetic energies from the total, calculate the initial speed of the...

This content explains Newton's Second Law for Rotation (τnet =Iα), drawing a clear analogy with its linear counterpart. It then demonstrates its application by solving a detailed problem involving a falling block and a rotating disk,...

This content explains how to calculate the kinetic energy of a rotating body, introducing the concept of rotational inertia (also known as moment of inertia). It clarifies that rotational inertia depends on both the mass and its...

This content introduces the Law of Conservation of Angular Momentum, stating that if the net external torque on a system is zero, its angular momentum (L) remains constant. It draws a parallel with the conservation of linear momentum and...

This content defines the total angular momentum (L) of a rigid body as the vector sum of the angular momenta of its constituent particles. It then extends Newton's Second Law to rotational motion, stating that the net external torque on...

Dive into Unit 6 of AP Physics 1: Energy and Momentum of Rotating Systems! This video covers rotational kinetic energy, torque, work, angular momentum, rolling without slipping, and conservation laws. Watch as we connect linear and...

Prepare for the AP Physics 1 Exam with this comprehensive review of the second half Unit 5! In this video, we cover torque, rotational inertia, rotational equilibrium, and the rotational forms of Newton’s laws. Learn key concepts,...

Carrying a pole helps the walker increase their rotational inertia, which aids in maintaining stability while walking over the narrow rope. The pole also adds more weight below the center of gravity of the walker, which is another bonus...

Carrying a pole helps the walker increase their rotational inertia, which aids in maintaining stability while walking over the narrow rope. The pole also adds more weight below the center of gravity of the walker, which is another bonus...

My solutions to Free Response Question #3 from the 2017 AP Physics 1 Exam. Also included are my reflections on how to get more points on the exam.

This Quantitative/Qualitative Translation question also works as a part of the AP...

My solutions to Free Response Question #3 from the 2018 AP Physics 1 Exam. Also included are my reflections on how to get more points on the exam.

This Quantitative/Qualitative Translation question also works as a part of the AP...

Deriving the Parallel Axis Theorem for moment of inertia or rotational inertia.

A 25 kg child is sitting on the edge of a merry-go-round. The merry-go-round has a mass of 255 kg and is rotating at 2.0 radians per second. The child crawls to the middle of the merry-go-round. What is the final angular speed of the...

Physics Quiz. 5 Popular questions answered. Can you solve these questions?

Why do spaceships heat up when entering earth but not when exiting?, Why can I touch aluminum foil in the oven and not get burned?, Why are we able to see...