Mass is a measure of the amount of matter in an object, influencing its resistance to acceleration and gravitational attraction.
Class 11 Physics
Systems of Particle & Rotational Motion
CBSE EXAM 2024-25
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The center of mass of a system of particles is the average position of all the particles, weighted by their masses. It is an intrinsic property of the system and depends on the positions and masses of the individual particles. The position of the center of mass is calculated based on the distribution of mass within the system and the relative distances between the particles.
However, it must be stressed that these forces don’t cause an effect in determining the place of the center of mass at a given instant of time. As for a change in position with time for a given overall force acting upon the system, changing positions with external influences, its intrinsic position as for the configuration does not. For example, if a system of particles is exposed to gravity or an external push, then the center moves relative to the center of mass according to the net force. However, its position relative to the system remains unchanged.
The center of mass is determined purely by the spatial arrangement and masses of the particles, independent of any forces on the system, making it a very basic concept in explaining the motion and behavior of physical systems.
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