Center of Gravity
Usually, gravity is assumed to be a uniform force acting on the body. The Center of gravity is the point at which gravity is assumed to be acting on the body. The Center of gravity is thus at the same place as the Center of mass. In physics literature, the terms Center of gravity and Center of mass are used interchangeably. They mean the same thing.
Motion of Center of Mass
Center of Mass is an important property of any rigid body system. Usually, these systems contain more than one particle. It becomes essential to analyze these systems as a whole. To perform calculations of mechanics, these bodies must be considered as a single-point mass. The Center of mass denotes such a point. Often the mechanical systems move in a transitory or a rotatory manner. In that case, the Center of mass also moves and acquires some velocity and acceleration. Let’s see how to calculate these metrics for such systems in detail.