Four cubes of side `a` each of mass `40g`, `20g`, `10g` and `20g` are arranged in XY plane as shown in the figure. The coordinates of COM of the combination with respect to point O is

Three particles of massses 50 g, 100 g and 150 g are placed at the vertices of an equilateral triangle of side 1m ( as shown in the figure ) . The ( x, y) coordinates of the centre of mass will be :

Three particles of massses 50 g, 100 g and 150 g are placed at the vertices of an equilateral triangle of side 1m ( as shown in the figure ) . The ( x, y) coordinates of the centre of mass will be :

Three particles A(50g), B(100g) and C(150g) are placed at vertices of an equilateral triangle as shown in figure. Then the coordinates of center of mass of system is :

Three particles A(50g), B(100g) and C(150g) are placed at vertices of an equilateral triangle as shown in figure. Then the coordinates of center of mass of system is :

Three particles A(50g), B(100g) and C(150g) are placed at vertices of an equilateral triangle as shown in figure. Then the coordinates of center of mass of system is :