A wire is suspended by one end. At the other end a weight equivalent to \( 20 \mathrm{~N} \) for....

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A wire is suspended by one end. At the other end a
P
weight equivalent to \( 20 \mathrm{~N} \) force is applied. If the
W
increase in length is \( 1.0 \mathrm{~mm} \), the increase in energy of the wire will be
(1) \( 0.01 \mathrm{~J} \)
(2) \( 0.02 \mathrm{~J} \)
(3) \( 0.04 \mathrm{~J} \)
(4) \( 1.00 \mathrm{~J} \)


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