problem07_64

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

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7.64: If the speed of the rock at the top is v t , then conservation of energy gives the speed b v from ) 2 ( 2 t 2 1 2 b 2 1 R mg mv mv + = , R being the radius of the circle, and so gR v v 4 2 t 2 b + = . The tension at the top and bottom are found from
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Unformatted text preview: R mv mg T 2 t t = + and R mv mg T 2 b b =-, so w mg mg v v T T R m 6 6 2 ) ( 2 t 2 b t b = = +-=-....
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