Figure shows two uniform rods of mass M and length l placed on two perpendicular lines. A small point mass m is placed on the point of intersection of the two lines. Find the net gravitational force experienced by m.

A uniform rod of mass M and length L rests on two supports. A ball of mass m=M//3 is placed at distance L//8 from the center as shown. Find reactions at supports.

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

A point mass m and a uniforms thin rod (mass M and length h) are shown in figure. Find the gravitational force of attraction between them

Show that the centre of mass of uniform rod of mass M and length L lies at the middle point of the rod.

Three point masses 'm' each are placed at the three vertices of an equilateral traingle of side 'a'. Find net gravitational force on any point mass.

Three point masses 'm' each are placed at the three vertices of an equilateral traingle of side 'a'. Find net gravitational force on any point mass.

Two point masses m and 4 m are seperated by a distance d on a line . A third point mass m_(0) is to be placed at a point on the line such that the net gravitational force on it zero . The distance of that point from the m mass is