problem10_74

University Physics with Modern Physics with Mastering Physics (11th Edition)

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10.74: Break into 2 parts, the rough and smooth sections. 2 2 1 2 2 1 1 : ϖ I mv mgh Rough + = 1 2 2 2 2 1 7 10 5 2 2 1 2 1 gh v R v mR mv mgh = + = Smooth: Rotational KE does not change. m/s 29.0 m) 25 )( m/s 80 . 9 ( 2 m) 25 )( m/s 80 . 9 ( 7
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