A) \[\frac{1}{7}\]second
B) second
C) \[\frac{2\pi }{7}\]second
D) \[\frac{2}{3\pi }\]second
Correct Answer: C
Solution :
Using the relation \[T=2\pi \sqrt{\frac{l}{g}}\] (given\[l=0.2\,\,m,\,\,g=9.8\,\,m/{{s}^{2}}\]) or \[T=2\pi \sqrt{\frac{0.2}{9.8}}=\frac{2\pi }{7}\sec \]You need to login to perform this action.
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