The sum of moments of masses of all the particle in a system about the centre of mass is always

The sum of moments of masses of all the particles in a system about the centre of mass is always

The sum of moments of masses of all the particles in a system about the center of mass is

If the origin of coordinate system lies at the centre of mass, the sum of the moments of the masses of particles of the system about the centre of mass (A) may be greater than zero (B) may be less than zero (C) may be equal to zero (D) is always zero

The centre of mass of two particles system lies

The centre of mass of two particles system lies

If a large number of particles are distributed on YZ plane and their centre of mass is at origin of coordinates, then Sum of moments of masses of all particles about the origin is zero Sum of momentum of masses of all particles w.r.t. the origin is zero Sum of moments of masses of all particles about Y axis is zero. Sum of moments of masses of all particles about Z axis is zero.

The rate of change of angular momentum of a system of particles about the centre of mass is equal to the sum of external torque about the centre of mass when the centre of mass is :

The rate of change of angular momentum of a system of particles about the centre of mass is equal to the sum of external torque about the centre of mass when the centre of mass is :

Define centre of mass of a system of particles.