Six identical particles each of mass `m` are arranged at the corners of a regular hexagon of side length `L`. If the mass of one of the particle is doubled, the shift in the centre of mass is

Six identical particles each of mass m are arranged at the corners of a regular hexagone of side length s. If the mass of one of the particle is doubled, the shift in the centre of mass is

Four identical particles each of mass m are arranged at the corners of a square of side length l . If the masses of the particles at the end of a side are doubled, the shift in the centre of mass of the system.

Four identical particles each of mass m are arranged at the corners of a square of sie a. If mass of one of th particle is doubled, the shift in the centre of mass of the system is

Four identical particles each of mass m are arranged at the corners of a square of sie a. If mass of one of th particle is doubled, the shift in the centre of mass of the system is