Eight particles of mass 'm' each are placed at the verties of a cube of side 'a' . Find gravitational potential energy of this system . .

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

Eight point charges , each q , are placed on the vertices of a cube of side a . Find the potential energy of the system of charges.

Three particles each of mass m are palced at the corners of an equilateral triangle of side b . The gravitational potential energy of the system of particle is

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.

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.

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.

Eight equal point charges each of charge 'q' and mass 'm' are placed at eight corners of a cube of side 'a'. (i) Find out potential energy of charge system.