Question

The gravitational force produced between any two objects kept 2.5×10^4 km apart is 580 N . At what distance should they be kept so that the gravitational force become half.​

Answer 1

Answer:

Formula for gravitational force    F = G M1 * M2 / R^2  where G is the gravitational constant

F2 / F1 = (R1 / R2)^2 = 1/2         where F2 is the required force

R2 = (2)^1/2  R1     distance for R2 to be 1/2 force at R1

Since force is proportional to the square of the distance of separation, increasing the distance of separation by 2^2 will halve the force