Answer :

The equation of motion for a system of n-particles can be written as fi = miai = mag, where ag indicates Acceleration of the center of mass of the system

Systems of particles can be added to the equation of motion. This covers the movement of systems made up of solids, liquids, or gases.  There are internal and external forces acting on the system, much like in static  What distinguishes them from one another ia that Assuming that m = summation mi represents the sum of all particle masses and that aG represents the acceleration of the center of mass G of the particles, we can deduce that maG = mi ai, due to this equation of the motion of n -particles can be written

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