A) \[\frac{A}{2\sqrt{2}}\]
B) \[\frac{A}{\sqrt{2}}\]
C) \[\frac{A}{2}\]
D) A
Correct Answer: B
Solution :
| [b] \[KE=PE\] |
| \[\frac{1}{2}k({{A}^{2}}-{{x}^{2}})=\frac{1}{2}k{{x}^{2}}\] |
| \[{{A}^{2}}\,=\,\,2{{x}^{2}}\] |
| \[x=\frac{A}{\sqrt{2}}\] |
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