In this video on Angular Momentum, Hewitt explains how there is linear momentum and angular momentum. When an object is moving in a circular movement, the object has momentum (mass x speed). Looking closer, the object has angular momentum since it is rotating an axis. This is represented by linear momentum x radial distance. Angular momentum = m x v x r. We also know that a net force is needed to change linear momentum, and the same goes for angular momentum: a net torque is needed to change its angular momentum.
Sunday, January 12, 2014
Angular Momentum
In this video on Angular Momentum, Hewitt explains how there is linear momentum and angular momentum. When an object is moving in a circular movement, the object has momentum (mass x speed). Looking closer, the object has angular momentum since it is rotating an axis. This is represented by linear momentum x radial distance. Angular momentum = m x v x r. We also know that a net force is needed to change linear momentum, and the same goes for angular momentum: a net torque is needed to change its angular momentum.
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Great video! The animation is great way to explain the concept and displays a great new way of displaying angular momentum. Other than that, I don't really see a problem with this- keep up the good work!
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