If gh and gd be the accelerations due to gravity at a height h and at depth d, above and below the surface of earth respectively. Assuming h << R and d <<R and if gh = gd then,

d = h d = 2h h = 2d Data is insufficient to arrive at a conclusion.

d = 2h

$g\left(1-\frac{2 h}{R}\right) \cong g\left(1-\frac{d}{R}\right)$ ⇒ d = 2h