problem07_55

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

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7.55: The potential energy has decreased by J. 8 . 156 ) m 00 . 2 )( s m (9.80 kg) (4.0 m) 00 . 2 )( s m kg)(9.80 0 . 12 ( 2 2 = × - The kinetic energy of the masses is then , v v m m J 8 . 156 ) kg 0 . 8 ( )
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Unformatted text preview: ( 2 1 2 2 2 1 = = + so the common speed is , v s m 43 . 4 kg . 8 J) 8 . 156 ( = = or s m 4.4 to two figures....
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