Question

What is the difference between angular acceleration and centripetal acceleration?

Answer 1

If an object is rotating at angular velocity ω and angular acceleration α , then a point at distance r from the axis of rotation will have speed v = r ω , tangential acceleration a t = r α , and centripetal acceleration a c = r ω 2 .........

Answer 2

Answer:

Angular velocity is the angular displacement covered over a time interval. So if an object has angular acceleration it is either rotating faster and faster or rotating slower and slower. On the other hand, radial/centripetal acceleration is always present when an object is undergoing circular motion.