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Finding a relationship for the ball's speed with the following clues.

  • Thread starter GreenTea09
  • Start date
  • #1
14
0

Homework Statement


A ball rolls around a horizontal circle at height y inside the cone shown below. Find an
expression for the ball’s speed in terms of r(radius of cone),x(height of cone),p and g(9.81ms^-2).
CCF07102013_00000.jpg







Homework Statement



r(radius of cone),x(height of cone),p and g(9.81ms^-2).




The Attempt at a Solution


i came across this question from a friend's tutorial but i stared at it whole day. cant think of any solutions,cant think of even where to start.

i tried using the variable g to form any possible relationship i could think of but the ball is moving in a horizontal circle..
 

Answers and Replies

  • #2
82
3
I would start by drawing a force diagram. What forces are acting on the ball? Which forces have to sum to zero?
 

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