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 ${I_A}$ and ${I_B}$ such that
${I_A} < {I_B}$
${I_A} > {I_B}$
${I_A} = {I_B}$
${{{I_A}} \over {{I_B}}} = {{{d_A}} \over {{d_B}}}$
where ${d_A}$ and ${d_B}$ are their densities.
Solution
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