problem06_29

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

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6.29: a) The magnitude of the force is proportional to the magnitude of the extension or compression; N. 64 ) m 050 . 0 / m 020 . 0 )( N 160 ( , N 48 ) m 050 . 0 / m 015 . 0 )( N 160 ( = = b) There are many equivalent ways to do the necessary algebra. One way is to note that to stretch the spring the original 0.050 m requires J 4 ) m 050 . 0 ( m 0.050 N 169 2 2 1 = = , so that stretching 0.015 m requires J 360 . 0 ) 050 . 0 / 015 . 0 )( J 4 ( 2 = and compressing 0.020
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Unformatted text preview: m requires J 64 . ) 050 . / 020 . )( J 4 ( 2 = . Another is to find the spring constant m / N 10 20 . 3 ) m 050 . ( ) N 160 ( 3 × = ÷ = k , from which 2 3 ) m 015 . )( m / N 10 20 . 3 )( 2 / 1 ( × J 360 . = and J 64 . ) m 020 . )( m / N 10 20 . 3 )( 2 / 1 ( 2 3 = × ....
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• Algebra, By the Way, The Spring

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