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If a spring extends by \( x \) on loading then energy
P stored by the spring is :- ( \( T \) is tension in the

W spring, \( \mathrm{K}= \) spring const.)
(1) \( \frac{T^{2}}{2 x} \)
(2) \( \frac{T^{2}}{2 k} \)
(3) \( \frac{2 k}{T^{2}} \)
(4) \( \frac{2 T^{2}}{k} \)
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