A) \[2\,\,m\]
B) \[4\,\,m\]
C) \[5\,\,m\]
D) \[6\,\,m\]
Correct Answer: B
Solution :
Moment of inertia of circular ring about an axis passing through its centre of mass and perpendicular to its plane \[I=M{{R}^{2}}\] Here, \[I=4\,kg-{{m}^{2}},\] \[m=1kg\] \[\therefore \] \[{{R}^{2}}=\frac{4}{1}=4\] or \[R=2m\] Therefore, diameter of ring \[=4\text{ }m\].You need to login to perform this action.
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