Question
Question: Two spheres each of mass M and radius R are separated by a distance of r. The gravitational potentia...
Two spheres each of mass M and radius R are separated by a distance of r. The gravitational potential at the midpoint of the line joining the centre of the spheres is
A

B

C

D

Answer

Explanation
Solution
Let P is the midpoint of the line joining the centres of the spheres.
The gravitational potential at point P is

