The rotational kinetic energy (\(K_{\text{rot}}\)) of a rigid body can be expressed using the formula:
\[ K_{\text{rot}} = \frac{1}{2} I \omega^2 \]
Where:
- \( I \) is the moment of inertia of the rigid body.
- \( \omega \) is the angular velocity of the rigid body.
This formula is analogous to the translational kinetic energy (\(K_{\text{trans}} = \frac{1}{2} m v^2\)), where \( m \) is the mass and \( v \) is the linear velocity. The rotational kinetic energy accounts for the rotational motion of the object.