Two spherical celestial objects, call them A and B have mass M1 and M2 with radius R1 and R2 respectively. Initially they are at a distance d from each
other. Now solve the following problems.
(a) What would be the gravitational acceleration on the surface of object A
? You should ignore B’s presence in this case. [2 marks]
(b) Find the escape velocity of object B. Again ignore A’s presence. [2 marks]
(c) Now lets say these two objects, A & B start to move towards each other
dude to mutual gravitational attraction. Find the time when they will
collide with each other. Express you answers in terms of the given parameters and any universal constant. [6