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

Six identical particles each of mass m are arranged at the corners of a regular hexagon of side length L . If the mass of one of the particle is doubled, the shift in the centre of mass is

Six charges are placed at the corner of a regurlar hexagon as shown . If an electron is placed at its centre O, force on it will be :

Five identical point charges +Q are placed at the five corners of a regular hexagon of edge length a. One corner is empty. Electric field intensity at the centre of the hexagon is

Six s imilar magnetic poles are placed on six corners of a regular hexagon of side 10 cm . A south pole of strength 10 Am is placed at the centre of hexagon. Find the magnetic force on the south pole.

A point mass of 10 kg is placed at the centre of earth. The weight of the point mass is

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 equal masses each of mass 'm' are palced at the three corners of an equilateral of side a If a fourth particle of equal mass is placed at the centre of triangle then net force acting on it is equal to .

Six negative equal charge are placed at the vertical of a regular hexagon . 6q charge is placed at the centre of the hexagon . Find the electric dipole moment of the system.