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March 28, 2015

Homework Help: physics

Posted by Anonymous on Saturday, October 31, 2009 at 1:02pm.

When a 4.48 kg mass is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.68 cm.

How much work must an external agent do to stretch the spring 3.96 cm from its unstretched position?

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