A) 84 J
B) 68 J
C) 23 J
D) 8 J
Correct Answer: D
Solution :
Here \[k=\frac{F}{x}=\frac{10}{1\times {{10}^{-3}}}={{10}^{4}}\,N/m\] W \[=\frac{1}{2}k{{x}^{2}}=\frac{1}{2}\times {{10}^{4}}\times {{(40\times {{10}^{-3}})}^{2}}=8\,J\]You need to login to perform this action.
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