What is difference between Center of Mass and Center of Gravity?


Both terms are same when gravity is uniform. When gravity is non-uniform following are the terms:

  • The centre of mass is a point that acts as if all the mass was centered there (the mass on one side of the point is equal to the mass on the opposite side). If supported at the centre of mass, an object will be balanced under the influence of gravity.
  • The centre of gravity is the point at which where the sum (vector) of the gravitational forces act on an object which will be balanced on that point.