Khan Academy: Moments, Torque, and Angular Momentum: Cross Product and Torque

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...

Introduction to moments in this video lecture. Learn how moments is essentially torque around an axis of rotation. [14:13]

Understand moment of force with this detailed video. [13:50]

An introduction to torque. [9:25]

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...

On this website practice how to calculate the clockwise or counterclockwise torque when a force is exerted on a bar that can rotate around an axis.

Learn what conservation of momentum means and how to use it with this reference page.Page also includes practice problems with answers.

A video showing that momentum is the product of mass and velocity. Video contains a simple example problem to show how to calculate. [9:17]

Solve a collision of balls in two dimensions problem using the conservations of momentum in this video. Video gives a step-by-step explanation of how to solve the problem to figure out what direction and velocity the balls travel after...

Solve a collision of balls in two dimensions using the conservations of momentum in this video. Video discusses how specifically to use trigonometry to solve the direction and velocity of the balls after the collision. [9:32]