Question

define centre of mass and obtain expression for the position of centre of mass of two particle system

Answer 1

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The centre of mass (CoM) is the point relative to the system of particles in an object. This is that point of the system of particles that embarks the average position of the system in relation to the mass of the object. At the centre of mass, the weighted mass gives a sum equal to zero. It is the point where any uniform force applied on the object acts.

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Answer 2

Answer:

Complex objects have particles that show mechanism differently. When we work on a system of particles we need to know its centre of mass to calculate the mechanics of oddly shaped objects. Rigid bodies constitute a system of particles which govern its motion and equilibrium. With the Centre of Mass, we can effortlessly understand the mechanism of complicated objects.