# Formula Circular motion Angular velocity    Radius    Mass

## Centripetal force

Unit
Centripetal force (also called radial force) is a force acting on a body rotating in a circle (towards the center of the circle). This force keeps the body on the circular orbit. It is always perpendicular to the angular velocity $$\omega$$ in a uniform circular motion.

## Angular velocity

Unit
Angular velocity indicates which angle is traveled by the body per second. If $$\omega$$ is doubled, then the centripetal force $$F_{\text z}$$ is quadrupled.