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 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 , each of mass m, are placed at the vertices of a right angled triangle as shown in figure. The position vector of the center of mass of the system is (O is the origin and hat(i), hat(j), hat(k) are unit vectors)

Three particles , each of mass m, are placed at the vertices of a right angled triangle as shown in figure. The position vector of the center of mass of the system is (O is the origin and hat(i), hat(j), hat(k) are unit vectors)

Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal to

Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal to

Three charges Q, (+q) and (+q) are placed at the vertices of an equilateral triangle of side l as shown in the figure. It the net electrostatic energy of the system is zero, then Q is equal to