Question

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Please explain .. question number 130

Answer 1

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Answer:

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Explanation:

Work done is equal to change in energy of body. 

Situation is done in the figure. When mass mm falls vertically on spring then spring is compresed by distance dd. 

Hence net work done in the process is 

✔REFER TO THE ATTACHMENT ✔

W=Potential energy stored in the spring 

+ Loss of potential energy 

=mg(h+d)−1/2 kd2

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