Calculate the work done, if a wire is loaded by ' \( M g^{\prime} \) weight and the increase in ....

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Calculate the work done, if a wire is loaded by ' \( M g^{\prime} \)
\( \mathrm{P} \)
weight and the increase in length is ' \( l \) '
W
(1) \( \mathrm{Mgl} \)
(2) Zero
(3) \( M g l / 2 \)
(4) \( 2 M g l \)


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