<P> Rotational energy or angular kinetic energy is kinetic energy due to the rotation of an object and is part of its total kinetic energy . Looking at rotational energy separately around an object's axis of rotation, the following dependence on the object's moment of inertia is observed: </P> <Dl> <Dd> E r o t a t i o n a l = 1 2 I ω 2 (\ displaystyle E_ (\ mathrm (rotational)) = (\ frac (1) (2)) I \ omega ^ (2)) </Dd> </Dl>

The energy of earth's rotation is an example of