A) 2
B) 3
C) 4
D) 5
Correct Answer: C
Solution :
[c] Moment of inertia about z-axis, \[{{I}_{z}}=m{{r}^{2}}\] (about centre of mass) Applying parallel axes theorem, \[{{I}_{z}}={{I}_{cm}}+m{{k}^{2}}\] \[{{I}_{cm}}={{I}_{z}}-m{{\left( \frac{2}{\pi }r \right)}^{2}}\] \[=m{{r}^{2}}-\frac{m4{{r}^{2}}}{{{\pi }^{2}}}=m{{r}^{2}}\left( 1-\frac{4}{{{\pi }^{2}}} \right)\]i.e., k=4You need to login to perform this action.
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