Four identical spheres each of mass m are placed at the corner of square of side 2 m. Taking the point of intersection of the diagonals as the orgin the coordinates of the centre of mass are ?

Four particles, each of mass 1kg are placed at the corners of a square of side 1m in the XY plane. If the point of intersecting of the diagonals of the square is taken as the origin, the co-ordinates fo the centre of mass are

Three identical spheres of mass M each are placed at the corners of an equilateral triangle of side 2 m. Taking one of the corners as the origin, the position vector of the centre of mass is

Three identical spheres of mass M each are placed at the corners of an equilateral triangle of side 2 m. Taking one of the corners as the origin, the position vector of the centre of mass is

Four particles, each of mass 1kg, are placed at the corners of a square of side one meter in the X - Y plane. If the point of intersection of the diagonals of the square is taken as the origin, the coordinates of the centre of mass are

Four particles each of mass m are placed at the vertices of a square of side l. the potential at the centre of square is

Four particles each of mass m are placed at the vertices of a square of side l. the potential at the centre of square is