Rotational MotionEasy
Question
One solid sphere A and another hollow sphere B are of same mass and same outer radii. Their moment of inertia about their diameters are respectively IA and IB such that
Options
A.IA = IB
B.IA > IB
C.IA < IB
D.IA / IB = dA/dB
Solution
Moment of inertia of a uniform density solid sphere, A = 
MR2
And of hollow sphere B =
MR2
Since M and R are same, IA < IB.
MR2 And of hollow sphere B =
MR2 Since M and R are same, IA < IB.
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