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Basic Problems on Centre of Mass Video Lecture | Physics for EmSAT Achieve

FAQs on Basic Problems on Centre of Mass Video Lecture - Physics for EmSAT Achieve

1. What is the definition of the centre of mass?

Ans. The centre of mass of a system is the point where the system's mass can be thought of as being concentrated. It is the average position of all the mass in the system.

2. How is the centre of mass calculated for a system of particles?

Ans. The centre of mass for a system of particles can be calculated by taking the weighted average of the positions of all the particles, where the weight is the mass of each particle.

3. Why is the concept of centre of mass important in physics?

Ans. The centre of mass is important in physics because it helps simplify the analysis of the motion of complex systems. By treating the system as a point mass located at the centre of mass, many problems can be solved more easily.

4. How does the position of the centre of mass change when particles are added or removed from a system?

Ans. The position of the centre of mass changes as particles are added or removed from a system. The centre of mass moves towards the side where mass is added and away from the side where mass is removed.

5. Can the centre of mass of a system lie outside the physical boundaries of the system?

Ans. Yes, the centre of mass of a system can lie outside the physical boundaries of the system. This can happen if the distribution of mass within the system is not uniform.

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Sep 21, 2025 Last updated

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