NCERT Exercise 7.21 - Gravitation

Question: Two 100 kg spheres of radius 0.10 m have centres 1.0 m apart. Find field and potential at midpoint; discuss equilibrium.

Answer: Field/force is **zero**; potential is **-2.67 x 10^-8 J/kg**; equilibrium is **unstable**.

Full step-by-step NCERT solution with diagrams on Something by Zero.