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The mass of a body cannot be considered ...

The mass of a body cannot be considered to be concentrated at the centre of mass of the body for the purpose of computing its moment of inertia.
For then the moment of inertia of every body about an axis passing through its centre of mass would be zero.

A

Statement-1 is True, Statement-2 is Ture , Statement -2 is a correct explanation for statement -1.

B

Statement-1 is True, Statement-2 is True , Statement-2 is NOT a correct explanation fro Statement -1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

Verified by Experts

The correct Answer is:
A

Moment of inertia is then sum of `m r^(2)` terms. We cannot change all the `r' s`, keep `m' s` the same, and expect `Sigma m_(i) r_(i)^(2)` to remain unchanged.
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