Two homogeneous spheres A and B of masses m and 2m having radii 2a and a respectively are placed in touch . The distance of the centre of mass from the first sphere is

Two homogeneous spheres A and B of masses m and 2 m having radii 2 a and a respectively are placed in contact. The ratio of distance of c.m from first sphere to the distance of c.m from second sphere is :

Two steel spheres of radius r and 2r are made to touch each other. The distance of their centre of mass from their point of contact is

Consider a system of two spheres of masses 5 kg and 25 kg. The distance between their centres is 1.2 m. What is the distance of their centre of mass from the centre of the sphere of mass 5 g?

Two homogeneous spheres P and Q of different materials and masses 1 kg and 2 kg are kept in contact. The radii of A and B are 20 cm and 10 cm respectively. What is the distance of their centre of mass from the centre of A?

Two lead balls of masses m and 5m having radii R and 2R are separated by 12R . If they attract each other by gravitational force, the distance covered by small sphere before they touch each other is

find the gravitational force of attraction between a uniform sphere of mass M and a uniform rod of length L and mass m, placed such that r is the distance between the centre of the sphere and the near end of the road.