A solid sphere A of radius R and mass M is attached at a point to a smaller solid sphere B of radius $r<R$ and mass $m<M.$ Assume that the line joining their centres lies along the horizontal. The moment of inertia of the system calculated about a vertical axis passing through the centre of A is $I_{A}$ and that calculated about a vertical axis passing through the centre of B is $I_{B}$. The difference $I_{A}-I_{B}$ is: [Image Placeholder]

Q1931: A solid sphere A of radius R and mass M is attached at a poi...

Class NEET 2026 ALL Q #1931

KNOWLEDGE BASED 4 Marks 2026 NTA-RE-NEET-2026 MCQ SINGLE

A solid sphere A of radius R and mass M is attached at a point to a smaller solid sphere B of radius $r

(B) $(M-m)(R+r)^{2}$

(D) $(m-M)(R-r)^{2}$

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Correct Answer: C

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