Choose the wrong statement

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In the process of explosion some changes may occur in momentum of individual fragments due to internal forces but the motion of the centre of mass is unaltered.

Motion of centre of mass depends upon the external force.

The location of centre of mass depends on the reference frame used to locate it

The position of centre of mass depends upon the shape of the body and the distribution of mass .

answer is C.

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Detailed Solution

For a rigid body , position of COM is fixed relative to the body. If the orientation of the body is altered , position of COM relative to the body does not change.Hence statement -(3) is wrong,

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