A) \[7\text{/}10\,m{{v}^{2}}\]
B) \[m{{v}^{2}}\]
C) \[9\text{/}10\,m{{v}^{2}}\]
D) None of these
Correct Answer: C
Solution :
\[E=\frac{1}{2}\left( \frac{2}{5}m{{r}^{2}} \right){{\left( \frac{v}{r} \right)}^{2}}+\frac{1}{2}\times \left[ \frac{2}{5}m{{r}^{2}}+m{{r}^{2}} \right]\,{{\left( \frac{v}{r} \right)}^{2}}\] \[=\frac{1}{5}M{{v}^{2}}+\frac{7}{10}M{{v}^{2}}=\frac{9}{10}M{{v}^{2}}\]You need to login to perform this action.
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