problem10_p102

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

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10.102: Denoting the upward forces that the hands exert as , and R L F F the conditions that R L F F and must satisfy are , r F F w F F R L R L = - = + where the second equation is , L = τ divided by r . These two equations can be solved for the forces by first adding and then subtracting, yielding . 2 1 2 1 - = + = r I F r I F R L ϖ Using the values and N 4 . 78 ) s m 80 . 9 )( kg 00 . 8 ( 2 = = = mg s m kg 7 . 132 ) m 200 . 0 ( ) rev rad 2 s rev 00 . 5 ( ) m 325 . 0 )( kg 00 . 8 ( 2 = × = ϖ π r I gives ). s N 4 . 66 ( N 2 . 39 s), N (66.4 N 2 . 39 - =
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Unformatted text preview: Ω + = R L F F N. 4 . 18 N, . 60 s, rad 314 . s rev 0.05 b) N. 2 . 39 , a) = = = = Ω = = = Ω R L R L F F F F . s rev 0.0916 is which , s rad 575 . gives d) force. downward a indicating sign minus with the N, 2 . 86 N, 165 s, rad 89 . 1 s rev 0.3 c) s N 66.4 N 39.2 = = Ω =-= = = = Ω ⋅ R R L F F F...
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This document was uploaded on 02/04/2008.

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