Question

The motion of centre of mass of a system of two particles is unaffected by their internal forces

• A. Irrespective of the actual direction of the internal forces
• B. only if they are along the line joining the particles
• C. only if they are at right angles to the line joining the particles
• D. only if they are obliquely inclined to the line joining the particles

Answer 1

The correct option is A

Irrespective of the actual direction of the internal forces

Because the centre of mass is affected only by external forces not by internal forces.