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Three thin metal rods,each of mas M and ...

Three thin metal rods,each of mas M and length dL,are welded to form an equilateral triangle.The moment of inertia of the composite structure about an axis passing through the centre of mas of the structure and perpendicualr to its plane is :

A

`1/2 ML^2`

B

`1/3 ML^2`

C

`2/3 ML^2`

D

`1/4 ML^2`.

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JBD PUBLICATION-MOTION OF SYSTEM OF PARTICLES AND RIGID BODY-EXAMPLE
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