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Questions  

A square ABCD is fabricated by four indentical thin rods each of mass m and length l. Then moment of inertia of the square about an axis passing through its centre O and perpendicular to its plane is

a
16ml2
b
34ml2
c
23ml2
d
43ml2

detailed solution

Correct option is D

I0=4[112ml2+m(l2)2]=4×13ml2=43ml2

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