problem07_42

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

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7.42: a) Equating the potential energy stored in the spring to the block's kinetic energy, , mv kx 2 2 1 2 2 1 = or . s m 11 . 3 ) m 220 . 0 ( kg 00 . 2 m N 400 = = = x m k v b) Using energy methods directly, the initial potential energy of the spring is the final
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Unformatted text preview: gravitational potential energy, , sin 2 2 1 θ mgL kx = or m. 821 . . 37 sin ) s m 80 . 9 )( kg 00 . 2 ( ) m 220 . )( m N 400 ( sin 2 2 2 1 2 2 1 = ° = = mg kx L...
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