Rotational Work-Energy Theorem

Definition

The rotational work-energy theorem states that the net work done on an object rotating about a fixed axis is equal to the change in its rotational kinetic energy.

Related terms

Angular Momentum: Angular momentum is the measure of an object's tendency to keep rotating at a constant speed around an axis. It depends on both the mass and distribution of mass of the object.

Conservation of Angular Momentum:

Conservation of angular momentum states that if no external torque acts on a system, then the total angular momentum of that system remains constant.

Torque:

Torque is the measure of how effectively a force can cause an object to rotate. It depends on both the magnitude and direction of the applied force as well as the distance from the axis of rotation.