The moment of inertia of the rectangular plate $\mathrm{ABCD},(\mathrm{AB}=2 \mathrm{BC})$ is minimum along…

The moment of inertia of the rectangular plate $\mathrm{ABCD},(\mathrm{AB}=2 \mathrm{BC})$ is minimum along the axis
  1. $\mathrm{G} \mathrm{H}$
  2. $\mathrm{E} \mathrm{F}$
  3. $\mathrm{BC}$
  4. $\mathrm{AC}$

Solution

The distribution of mass about axis $\mathrm{EF}$ is minimum so radius of gyration is minimum and therefore moment of inertia is minimum about EF *

Asked in: JEE Mains - Rotational Motion - Test 1

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