February 19, 2017

Homework Help: physics

Posted by Tammy on Wednesday, October 31, 2007 at 8:15pm.

A .5kg ball on the end of a string is revolving uniformly in ahorizontal circle of radius 1m. The ball makes 2 revolustion in a second.
a) determine the linear (tangential) speed of the ball.
For this part of the question would I do this:
b)determine the ball's centripetal acceleration

c)determine the force a person must exert on the opposite end of the string.

Is this correct? The only thing i'm not too sure about is part a). Thanks in advance for your help.

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