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Homework Help: Conservation of energy

  1. Jan 15, 2006 #1
    A bowling ball ( I = 2/5 M ^R2 ) encounters a 0.8 m vertical rise on the way back to the ball rack. If the ball rolls without slipping with a center of mass translational velocity of 4.0 m/s at the bottom of the rise.

    How do I find the rotational kinetic energy of the ball at the top or bottom without knowing the radius? I know how to find the translational speed at the top.
    Last edited: Jan 15, 2006
  2. jcsd
  3. Jan 15, 2006 #2
    I just figured it out. Just need to substitute properly.
  4. Jan 15, 2006 #3
    I was mistaken. I do not know the mass.
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