From a circular disc of radius \( R \) and mass \( 9 M \), a small ...

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From a circular disc of radius \( R \) and mass \( 9 M \), a small disc of mass \( M \) and radius \( R / 3 \) is removed concentrically. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through its centre is
(a) \( \frac{40}{9} M R^{2} \)
(b) \( M R^{2} \)
(c) \( 4 M R^{2} \)
(d) \( \frac{4}{0} M R^{2} \)
(Mains 2010)
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Автор

Removed part ka lena tha tangetial axis se icm +mr^2

Vbenettonjuniper
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But sir ham removed part tho 1/4 ke round lete hai yaha phri 1/2 kiyu huaa?

addy