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The moment of inertia of an elliptical disc of uniform mass distribution of mass ‘m’, major axis ‘r’, minor axis ‘d’ about its normal axis is:

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a
=mr22
b
md22
c
>mr22
d

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detailed solution

Correct option is D

Moment of inertia of the elliptical disc should be less than that of a circular disc having radius equal to the major axis of the elliptical disc.


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The moment of inertia of a circular disc of radius 2 m and mass 2 kg, about an axis passing through its centre of mass is 2 kg –m2 . Its moment of inertia about an axis parallel to this axis and passing through its edge (in Kg -m2) is


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