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Homework Help: Finding an equation for the speed of a ball

  1. Apr 28, 2009 #1
    1. The problem statement, all variables and given/known data
    A small ball rolls around a horizontal circle at height y inside the cone. Find an expression of the ball's speed in terms of a, h, y and g

    2. Relevant equations
    Newton's third law

    3. The attempt at a solution
    I am not sure how to approach this problem
  2. jcsd
  3. Apr 28, 2009 #2


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    Science Advisor
    Homework Helper

    No, use Newton's second law …

    force = mass times acceleration, plugging in the formula for centripetal acceleration :wink:
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