difference between centre of gravity and centre of mass
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CENTRE OF MASS: a point at which the total mass of the system is assumed to be concentrated
CENTRE OF GRAVITY: a point at which total force is assumed to be zero
centre of mass is the place where whole mass is supposed to be contrated. & centre of gravity is the center of whole gravity.... ok!!!! it is in simple languge sir...
Centre of gravity: a point in the system, where the gravitational force tends to act
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