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 point masses m and M are separated bya distance L . The distance of the centre of mass of the system from m is

Two bodies of masses m_(1) and m_(2) are separated by a distance R. The distance of the centre of mass of the bodies from the mass m_(1) 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 spheres A and B of radii 17 cm each and having charges of 1 and 2 coulombs respectively are separated by a distance of SO cm. The electric field at a point on the line joining the centres of two spheres is approximately zero at some distance from the sphere A. The electric potential at this point is: