Question:medium
A circular disc of radius R and thickness (R)/(6) has moment of inertia I about an axis passing through its centre perpendicular to its plane. It is melted and recast into a solid sphere. The moment of inertia of the sphere about its diameter is:
A circular disc of radius R and thickness (R)/(6) has moment of inertia I about an axis passing through its centre perpendicular to its plane. It is melted and recast into a solid sphere. The moment of inertia of the sphere about its diameter is:
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When bodies are reshaped:
Mass conserved ⟹ Volume conserved
Always compare MOI using mass relations.
Updated On: Mar 19, 2026
- \(I\)
- \(\dfrac{2I}{8}\)
- \(\dfrac{I}{5}\)
- (I)/(10)
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The Correct Option is C
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