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    frankmarius's Avatar
    frankmarius Posts: 1, Reputation: 1
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    #1

    Nov 12, 2012, 01:53 AM
    rotational dynamics
    a uniform sphere rolls on a horizontal surface at 20m/s and then rolls up an incline that is inclined at 30 degrees to a height h from the ground.

    if frictional forces are negligible , show that the height h is independent of the mass of the sphere hence calculate the value of h.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Nov 12, 2012, 07:53 AM
    Hint: use . Remember that the kinetic energy of a rolling sphere has a component due to translation of plus a component due to rotation of . Work this equation a bit and what do you find?
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