The moment of inertia of a system of four rods, each of length I and mass m, about the axis perpendicular to plane of square as shown is

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23ml2

2ml2

3ml2

103ml2

answer is D.

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Detailed Solution

Moment of inertia about axis 2 which is parallel to axis 1:I2=4ml212+ml22=4ml23Apply perpendicular axis theorem,I1=I2+4mx2=4ml23+4ml22=103ml2

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