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

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

Three identical particles each of mass 0.1 kg are arranged at three corners of a square of side sqrt(2) m . The distance of the centre of mass from the fourth corners is

Work done by an external agent in bringing three particles each of mass m at the vertices of an equilateral triangle of length l 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