# Physics ball speed problem

## Homework Statement

A pitcher rotates a 2kg ball around a verticle circular path of radius 1.2m. he exerts a 50N force directed parallel to the motion of the ball around the completer circular path. The speed of the ball at the top of the circle is 20m/s. If the ball is released at the bottom of the circle, what is the speed upon release?

## Homework Equations

KEi+PEi = KEf+PEf

wd = Fd
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