Rotational kinetic energy

Definition

Rotational kinetic energy refers to the energy possessed by an object due to its rotation. It is dependent on both the moment of inertia and the angular velocity of the object.

Analogy

Imagine a spinning top. The faster it spins (angular velocity), and the more mass it has concentrated away from its axis (moment of inertia), the more rotational kinetic energy it possesses.

Related terms

Moment of inertia (I): Moment of inertia is a measure of an object's resistance to changes in its rotational motion. It depends on both the mass distribution and shape of the object.

Angular velocity (w): Angular velocity represents how fast an object rotates around an axis. It is measured in radians per second.

Torque: Torque is a twisting force that causes objects to rotate. It depends on both the applied force and the distance from the axis of rotation.