Question

At what altitude above the earth's surface is the acceleration due to gravity equal to g/2

Answer 1

Answer:

R

Explanation:

g = kM/R² , kM = gR²

g' = kM/(R+h)² = g/2

gR² /(R+h)² = g/2

(R+h)²/R² = 2

(R+h)/R = 2

1 + h/R = 2

h/R = 1

h = R