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Solve as well as soon. A 2kg wooden block is pushed against a spring (not attached) compressing it through 20cm from its original length. (a)

Solve as well as soon.

A 2kg wooden block is pushed against a spring (not attached) compressing it through 20cm from its original length. (a) If the work required to compress the spring is 250J, find the spring constant k. (b) If the same spring is compressed through 10cm, find the final velocity of the wooden block when it is released.

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