Four particles each of mass m are placed at the vertices of a square of side l. The potential energy of the system 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

Find the potential energy of a system of four particles each of mass 2m kept at the vertices of a square of side x. Also find the potential at the centr of the square.

Four bodies each of mass m are placed at the different corners of a square of side a. find the work done on the system to take any one body to infinity.

Find the gravitational potential energy of a system of four particles, each of mass m placed at the verticles of a square of side l . Also obtain the gravitaitonal potential at centre of the square.

Four particles each of mass 'm' are placed at the four vertices of a square 'a' .Find net force on any one the particle.

Four particles each of mass m are kept at the four vertices of a square of side 'a' . Find gravitational potential energy of this system.

Four short dipoles each of dipole moment 'p' are placed at the vertices of a square of side a. The direction of the dipole moments are shown in the figure.

Four particles, each of mass m and charge q, are held at the vertices of a square of side 'a'. They are released at t = 0 and move under mutual repulsive forces speed of any particle when its distance from the centre of square doubles is

Find the potential energy of 4-particles, each of mass 1 kg placed at the four vertices of a square of side length 1 m.

Three identical particles each of mass m are placed at the vertices of an equilateral triangle of side a. Fing the force exerted by this system on a particle P of mass m placed at the (a) the mid point of a side (b) centre of the triangle