What is the center of mass?

The point through which the gravitational force acting on each particle of an object passes is called the center of mass of the object. Relatively speaking, this point is identified as the mass carrier of the entire object.

For example, we can assume that the mass of a balanced marble is concentrated at its center. So the center of the marble is its center of mass. But nothing in our real world is perfectly balanced. Therefore, if we consider their center as their center of mass, it will not be correct. If we can determine the center of mass by balancing the mass of the entire object, we can assume that point as the true center of mass. But that point is almost impossible to determine with certainty.