problem06_42

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

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6.42: The initial and final kinetic energies of the brick are both zero, so the net work done on the brick by the spring and gravity is zero, so 0 ) 2 1 ( 2 = - mgh kd , or m. 53 . 0 ) m / N 450 /( ) m 6 . 3 )( s / m 80 . 9 )( kg 80 . 1 ( 2 / 2 2 = = = k mgh
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Unformatted text preview: d The spring will provide an upward force while the spring and the brick are in contact. When this force goes to zero, the spring is at its uncompressed length....
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This document was uploaded on 02/04/2008.

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