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Units and Measurement
Question
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If we shift the axis parallel to it, about which axis the moment of inertia of body is least?

Answer

According to theorem of parallel axis, the moment of inertia of a body about an axis parallel to axis passing through centre of mass of body is,

                     I = Ic + Mh2
For an axis passing through the centre of mass of the body, minimum value of h is zero. Hence, the moment of inertia is minimum about this axis. 

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