Question

If Neptune’s mass were reduced, what could be done to maintain the same force of gravitational attraction between Neptune and the Sun?

Answer 1

Make Neptune closer to the sun because then it would have a stronger gravitation pull. Because the closer the objects are, they will have a stronger gravitaional force and when the object has more mass, the gravity is also stronger. So, if the mass is reduced, the gravity force would be reduced, but if you bring neptune closer, the gravity force would increase