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Moment of inertia changes when the axis of rotation is changed'. Discuss |
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Answer» Solution : MOMENT of inertia of a body I `=MR^(2)=Sigmamr^(2)` `therefore=m_(1)r_(1)^(2)+……….+m_(n)r_(n)^(2)` where is the DISTANCE of each particle of the body from axis of rotation. When axis of rotation CHANGES then distance of the particles will change. So from above EQUATION moment of inertia of the body changes. .Ex : Moment of inertia of thin rod about a perpen-dicular axis passing through centre is `(Ml^(2))/(12)` whereas that passing through one end is `(Ml^(2))/(3)` |
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