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

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5.115: a) The analysis is the same as that for the conical pendulum of Example 5.22, and so . 0 . 81 m) 100 . 0 ( 4 s) 00 . 4 1 )( s m 80 . 9 ( arccos 4 arccos 2 2 2 2 2 ° = = = π L π gT β b) For the bead to be at the same elevation as the center of the hoop, ° = 90 β and , 0 cos = β which would mean , 0 = T the speed of the bead would be infinite, and this is
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Unformatted text preview: not possible. c) The expression for β cos gives , 48 . 2 cos = β which is not possible. In deriving the expression for , cos β a factor of β sin was canceled, precluding the possibility that . = β For this situation, = β is the only physical possibility....
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