Center of mass is a point
Which is geometric center of a body
From which distance of particle are same
Where whole mass of the body is supposed to be concentrated
Which is the origin of refrence frame
As we have learned
Centre of Mass -
The centre of mass of a distribution of mass in space is the unique point where the weighted relative position of the distributed mass sums to zero or the point where if a force is applied it moves in the direction of the force without rotating.
The Center of mass is a point where the whole mass of a body is supposed to concentrate if a force is applied it moves in the direction of force without rotating