Khan Academy: Constant Angular Momentum When No Net Torque

Showcase a few classic demonstrations of angular momentum with this two-minute film. Using a gyroscope, a bicycle, and a tire removed from a bicycle, the narrator explains how angular momentum keeps an object up in a way that defies the...

A video exploring angular momentum which is how much movement an object has when it's rotating in a circle. Look at how the equation for angular momentum is derived. [11:18]

Learn how to find the direction component of torque with this video. Review vector quantities to understand how to apply the right hand rule to a torque problem. [10:00]

If you have a rotating office chair in your classroom, you can have physics pupils participate in this simple, yet effective demonstration of angular momentum. One partner sits in the chair, arms outstretched, holding heavy weights. The...

Learn that a torque is applied when a force causes an object to rotate around an axis in this video. Video overviews net torque and how to determine if torque is positive or negative. [9:24]

This video explains that there is a concentrated point in an object where all the mass is held called the center of mass. It also explains that if an object is supported at the center of mass there is no net torque on the object. Learn...

Angular momentum is constant when there is no net torque. View this Khan Academy video addressing the conservation of angular momentum. [10:12]

Practice calculating change in momentum and speed from force vs. time graphs using this four-question quiz.

A video showing an example of a conservation of momentum in two dimensions problem that is worked out step-by-step. [10:36]

A reference page explaining what momentum and impulse are. Also learn how they are related to force.