A) \[a\]
B) \[{{a}^{2}}\]
C) \[{{a}^{-2}}\]
D) \[{{a}^{0}}\]
Correct Answer: B
Solution :
The potential energy of a weightless spring compressed by a distance a is given by \[U=\frac{1}{2}m{{\omega }^{2}}{{a}^{2}}\]or \[U\propto {{a}^{2}}\]
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