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Moment of Inertia of a Disc

Q.1 M.I of un...

Question

Q.1 M.I of uniform circular disc about its diameter is $100 g c m^{2}$ find M.I.
1 about its target
2 about on axis to its plane.

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Solution

Moment of inertia about its diameter is $100 g c m^{2}$
(a) Moment of inertia about its tangent is
$I_{tan g e n t} = (200 + m r^{2}$ )
(b) Moment of inertia about an axis perpendicular to the plane is
$I_{p l a n e} = 2 \times (m o m e n t o f i n e r t i a a b o u t d i a m e t e r)$
$I_{p l a n e} = 200 g c m^{2}$

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