Question

Define "Centre of mass".

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Answer 1

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• Centre of mass is the average position of all the parts of the a object or a system, weighted according to their masses.
• Example :- center of mass of a uniform disc shape would be at its center.

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• Formula for center of Mass of a Two-Particle System :- $\sf{(m_{1}+m_{2}) \:r_{cm} = m_{1 } r_{1}+m_{2} r_{2}}$
• The body at this point is balanced and hence no net torque(force) acts on it, thus the body remains in equilibrium.
• Force can be applied for linear acceleration (without angular).

Answer 2

Answer:

Centre of mass of a body or system of a particle is defined as, a point at which whole of the mass of the body or all the masses of a system of particle appeared to be concentrated. This point is called the centre of mass of the system of particles.

Explanation:

Hope its helpful.✌️