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How much work would you have to do to slowly stretch a (relaxed) spring with spring constant k by distance x?

Sagot :

Answer:

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Explanation:

The work done in stretching or compressing a spring is proportional to the square of the displacement. If we double the displacement, we do 4 times as much work. It takes 16 J to stretch the spring 20 cm from its unstretched length, so it takes 12 J to stretch it from 10 cm to 20 cm.