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  4. The moment of inertia of a circular disc about an axis passing through the circumference perpendicular to the plane of the disc is :

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Q. The moment of inertia of a circular disc about an axis passing through the circumference perpendicular to the plane of the disc is :

BITSATBITSAT 2006

Solution:

$I=I_{c m}+m R^{2}=\frac{m R^{2}}{2}+m R^{2}$
$=\frac{3 m R^{2}}{2}$