The centre of mass is the point at which the entire mass of an object is considered to be concentrated. This point may or may not coincide with the physical center of the object. On the other hand, the center of gravity is the point at which the entire weight of an object is considered to be concentrated. This point is affected by the gravitational force acting on the object and may change depending on the surrounding gravitational field.
The center of mass and center of gravity are closely related to each other. In an object with uniform density, these two points will coincide with each other. However, in non-uniform objects or objects affected by external forces, the center of mass and center of gravity may not be at the same point.
The location of an object's centre of mass is directly related to its stability. If the centre of mass is located within the base of support, the object will be stable. However, if the centre of mass is outside the base of support, the object will be unstable and may topple over.
Yes, the center of mass can be outside an object. This can occur in objects with irregular shapes or objects affected by external forces such as wind. In such cases, the centre of mass may not be located within the physical boundaries of the object.
The centre of mass is calculated by finding the weighted average of the positions of all the particles that make up an object. This can be done by dividing the total mass of the object by the sum of the mass of each particle multiplied by its distance from a chosen reference point.