A) \[\frac{2}{5}\]
B) \[\frac{2}{7}\]
C) \[\frac{5}{7}\]
D) \[\frac{3}{5}\]
Correct Answer: C
Solution :
Fraction of total energy of a rolling body which is associated with rotation is \[\frac{{{K}^{2}}}{{{R}^{2}}+{{K}^{2}}}\] Also \[{{K}^{2}}=\frac{2}{5}{{R}^{2}}\] \[\Rightarrow \] \[{{f}_{rotational}}=\frac{2}{7}\]You need to login to perform this action.
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