Physics ball speed problem

  • Thread starter alevis
  • Start date
  • #1
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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


The Attempt at a Solution


wd = Fd
 

Answers and Replies

  • #2
CompuChip
Science Advisor
Homework Helper
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Can you explain what you wrote under "3. The Attempt at a Solution ".
What does that formula give you? Why is it useful?
 

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