Calculate centre of mass of the system

If the system is released, then the acceleration of the centre of mass of the system is : .

Six rods of the same mass m and length ? are arranged as shown in figure. Calculate the coordinate of the centre of mass of the system:- У >X

Choose correct statement (A) The position of centre of mass of a system is dependent on the choice of coordinate system. (B) Newton's second law of motion is applicable to the centre of mass of the system (C) Internal forces can not change the state of centre of mass (D) Internal forces can change the state of centre of mass.

The velcoity of centre of mass of the system as shown in the figure :-

The velcoity of centre of mass of the system as shown in the figure :-

The co-ordinates of the centre of mass of the system as shown in figure are

The co-ordinates of the centre of mass of the system as shown in figure are