Find the work done to bring `4` particle each of mass `100` gram from distances to the vertices of a square of side `20 cm`.

Find the work done to bring 4 particles each of mass 100 gram from large distances to the vertices of square of side 20 cm.

Find the work done in brigning three particles each having a mass of 100 g, from large distances to the vertices of an equilateal triangle of side 20 cm.

Find the work done in brigning three particles each having a mass of 100 g, from large distances to the vertices of an equilateal triangle of side 20 cm.

Find the work done in brigning three particles each having a mass of 100 g, from large distances to the vertices of an equilateal triangle of side 20 cm.

The work done in bringing three particles each of mass 10 g from a large distance to the vertices of an equilateral triangle of side 10 cm is (approximately)

Find the potential energy of a sytem of four particle each of mass 5 kg placed at the vertices of a square of side 2m.

Find the potential energy of a system of four particles each of mass m placed at the vertices of a square of side I .

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.