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Rotational Inertia

In a rectangl...

Question

In a rectangle ABCD $(B C = 2 A B)$ . The moment of inertia is maximum along axis through:

A

BC

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B

AB

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C

HF

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D

EG

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Solution

The correct option is B AB
For maximum moment of inertia whole mass should be on one side of the axis and should befarthest from the axis.
hence , maximum differential mass points are farthest from the axis $A B$ ( as shown in figure) so from this axis only there will be max moment of inertia.

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