# Rotational Kinetic Energy

Written by Jerry Ratzlaff on . Posted in Kinematics

Rotational kinetic energy, abbreviated as $$KE_r$$, is the energy an object has because it is rotating and does not matter if its moving from one place to another.

## Rotational Kinetic Energy formula

 $$\large{ KE_r = \frac {1}{2}\; I \; \omega^2 }$$

### Where:

$$\large{ KE_r }$$ = rotational kinetic energy

$$\large{ \omega }$$  (Greek symbol omega) = angular velocity

$$\large{ I }$$ = moment of inertia