A) \[k/x\]
B) \[\frac{1}{2}\,k/{{x}^{2}}\]
C) \[k/{{x}^{2}}\]
D) \[2k/{{x}^{2}}\]
Correct Answer: B
Solution :
The stored potential energy in spring \[U=\frac{1}{2}k{{x}^{2}}\]
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