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Of the following choose the wrong statement

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a
Internal forces of the system do not affect the motion of centre of mass
b
In uniform gravitational field centre of mass and centre of gravity coincide
c
Two balls are thrown simultaneously in air.  The acceleration of the centre of mass of those two balls in air is equal to 'g'.
d
The position of centre of mass depends on mass distribution and on the co - ordinate system chosen.

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detailed solution

Correct option is D

Position of com is independent of coordinate system.

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