problem06_34

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

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6.34: a) The average force is N 400 ) m 200 . 0 /( ) J 0 . 80 ( = , and the force needed to hold the platform in place is twice this, or 800 N. b) From Eq. (6.9), doubling the distance quadruples the work so an extra 240 J of work must be done. The maximum force is
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Unformatted text preview: quadrupled, 1600 N. Both parts may of course be done by solving for the spring constant N/m 10 00 4 m) 200 ( J) . 80 ( 2 3 2 × = ÷ = . . k , giving the same results....
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This document was uploaded on 02/04/2008.

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