Question

The change in the value of g at a height h above the surface of the earth is the same as at a depth d below the surface of earth. When both d and h are much smaller than the radius of earth, then which one of the following is correct?

Answer 1

g=GMr2

r is the distance to the center of the earth.

Twice the radius of Earth above the surface would increase the distance by a factor of three, therefore gravity would reduce by a factor of nine.

g/9 = 1.0896 meters/s^2

hope it helps u