Understanding circular motion is a prerequisite for the Kepler’s Laws of planetary motion, the physics of planetary and satellite orbits as well as Newton’s theory of gravitation.
Worksheet: Please see this link for a worksheet on angular velocity Angular Velocity
Angular Acceleration is the rate of change of angular Velocity with respect to time. It is a vector quantity. It is denoted by α. The Angular Acceleration Formula is given by:
Note: non-calculus version – replace the “d” s with delta
Where, ω is the angular velocity and t is the time taken.
Centripetal acceleration is the acceleration that keeps objects moving in a circle. Using the earth – moon system as an example, the centripetal acceleration which keeps the moon moving a round the earth is due to the gravitational field of the earth.