- #1
21joanna12
- 126
- 2
Homework Statement
My guess is no because if you have a ball on a string, for there to be angular acceleration, the angular velocity must increase so you need an increasing tangential speed, so your centripetal acceleration must increase (α=v2/r)... but I'm not sure.
One other question: is there such a thing as tangential acceleration? I was watching a video that said that:
tangential velocity= r(angular velocity)
tangential acceleration = r(angular acceleration)
Isn't tangential acceleration just the rate of change of tangential velocity, which is the centripetal acceleration? If so, how can you equate the tangential and angular accelerations? Is the tangential acceleration the cross product of displacement and angular acceleration?
Very confused! Thank you in advance for any replies and I apologise for the mass of questions. I looked through several websites and PF posts before posting this but couldn't find anything. If anyone finds a good link on this topic I would also be very grateful!
:)