A spring which is initially in its unstretched condition is first stretched by a lengt x and then again by a length x. The work done in the first case is W1 and in second case is W2.Relation between W1 and W2
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Answer to this question is
W2 = 3W1
As more work is done to strech it to the length of 2x than x
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ans 3J...............
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