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CGPET 2011 Solved Paper

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Question : 12

Total: 150

On removing the concentric circular part of radius r from a disc of radius R, an annular disc of mass M is obtained. The moment of inertia of this annular disc about an axis normal to its plane and passing through its centre of gravity is

‌
1
2
M(R2+r2)
‌
1
2
M(R2−r2)
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1
2
M(R4+r4)
‌
1
2
M(R4−r4)

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