Question

What is the difference between the centre of gravity and the centre of mass?

Answer 1

Centre of mass is the point at which the distribution of mass is equal in all directions and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions and it does depend on gravitational field. The centre of mass and centre of gravity are in same position if the gravitational field in which the object exists stays uniform.