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Radius of Gyration

The diagram s...

Question

The diagram shows a non-uniform disc of radius a and mass M whose centre of mass is not at O. If the moment of inertia of the disc about XY is l, its moment of inertia about PQ is

I - M a^{2}

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K - M a^{2}

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M a^{2}

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None of these

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Solution

The correct option is D None of these
$\begin{matrix} I_{x y} = I_{c m} + m x^{2} w h e r e x i s d i s tan c e b e t w e e n c m a n d o I_{p q} = I_{c m} + m r^{2} w h e r e r i s d i s tan c e b e t w e e n c m a n d z S o, n o a n s w e r i s m a t c h H e n c e, t h e o p i o n D i s t h e c o r r e c t a n s w e r . \end{matrix}$

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M

a

\frac{M a^{2}}{x}

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