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

  1. Oct 6, 2013 #1
    1. The problem statement, all variables and given/known data
    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






    1. The problem statement, all variables and given/known data

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




    3. 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..
     
  2. jcsd
  3. Oct 6, 2013 #2
    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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