problem11_88

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

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11.88: a) N. 10 2 . 4 ) 010 . 0 )( m 10 0 . 3 )( Pa 10 4 . 1 ( 4 2 4 10 max 0 max × = × × =  ∆ = - l l YA F b) Neglect the mass of the shins (actually the lower legs and feet) compared to the rest of the body. This allows the approximation that the compressive stress in the shin bones is uniform. The maximum height will be that for which the force exerted on each lower leg by the ground is max
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Unformatted text preview: F found in part (a), minus the persons weight. The impulse that the ground exerts is s. m kg 10 2 . 1 ) s 030 . ))( s m 80 . 9 )( kg 70 ( N 10 2 . 4 ( 3 2 4 =- = J The speed at the ground is gh m J gh 2 2 so , 2 = and solving for h , m, 64 2 2 1 2 = = m J g h but this is not recommended....
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This document was uploaded on 02/05/2008.

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