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  4. The moment of inertia of the rectangular plate A B C D,(A B=2 B C) is minimum along the axis

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Q. The moment of inertia of the rectangular plate $A B C D,(A B=2 B C)$ is minimum along the axisPhysics Question Image

System of Particles and Rotational Motion

Solution:

The distribution of mass about axis EF is minimum so radius of gyration is minimum and therefore moment of inertia is minimum about EF.