Question 1
Is the midpoint between two equal masses a point of stable equilibrium?
Question 2
Two stars approach from 10⁹ km. What is converted into kinetic energy?
Question 3
What is the minimum speed to orbit earth near surface?
Question 4
Does gravitational potential have same value everywhere inside a spherical shell?
Question 5
If two bodies are at same distance from earth, but one is in tunnel, which has greater weight?