ch07-p031 - 31. The work done by the spring force is given...

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32 2 1 (2.0 10 N/m)[(0.050 m) (0.040 m) ] 0.90 J. 2 s W = (b) Moving from 5.0 cm i x =+ to 2.0 cm x =− , we have 2 1 ( 0.020 m) ] 2.1 J. 2 s W = (c) Moving from i x to x , we have 2 1 ( 0.050 m) ] 0 J. 2 s W = 31. The work done by the spring force is given by Eq. 7-25: 22 1 () 2 s if Wk x x . The spring constant k can be deduced from Fig. 7-37 which shows the amount of work done to pull the block from 0 to
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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