Five particles each of mass 'm' are kept at five verties of a regular pentagon . A sixth particles of mass 'M' is kept at center of the pentagon 'O'.Distance between'M' and is 'm' is 'a'. Find
(a) net force on 'M'
(b) magnitude of net force on 'M' if any one particle is removed from one of the verties.

Six particles each of mass 'm' are placed at six verties A,B,C,D,Eand F of a regular hexagon of side 'a'. A seventh particle of mass 'M' is kept at center 'O' of the hexagon. (a)Find net force on 'M'. (b)Find net force on 'M' if particles at A is removed. (c) Find net force on 'M' if particles at A and C are removed .

Six particles each of mass 'm' are placed at six verties A,B,C,D,Eand F of a regular hexagon of side 'a'. A seventh particle of mass 'M' is kept at center 'O' of the hexagon. (a)Find net force on 'M'. (b)Find net force on 'M' if particles at A is removed. (c) Find net force on 'M' if particles at A and C are removed .

Three particles each of mass m are kept at vertices of an equilateral triangle of side L. The gravitational field at centre due to these particle is

Three particles each of mass m are kept at vertices of an equilateral triangle of side L. The gravitational field at centre due to these particle is

Three particles each of mass m are kept at the vertices of an euilateral triangle of side L . The gravitational field at the centre due to these particle is

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 placed at the four vertices of a square 'a' .Find net force on any one the particle.

Three particles, each of mass m, are placed at the vertices of an equilateral triangle. What is the force acting on a particle of mass 2m placed at the centroid D of the triangle ?

Five point masses m each are kept at five vertices of a regular pentagon. Distance of center of pentagon from any one of the vertice is 'a'. Find gravitational potential and filed strength at center.

Six particles each of mass m are placed at the corners of a regular hexagon of edge length a . If a point mass m_0 is placed at the centre of the hexagon, then the net gravitational force on the point mass is