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Particles each of mass 1kg are placed at...

Particles each of mass 1kg are placed at 1m, 2 m and 4 m on X-axis with respect to origin. Then moment of inertia of the system about Y-axis is

A

`7 kg m^2`

B

`14 kg m^2`

C

`21 kg m^2`

D

`28 kg m^2`

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