Question

Find the magnitude of the acceleration due to gravity at the surface of the earth. (M= 6 × 10²⁴ kg, R = 6400 km)

Answer 1

Data : M = 6 × 10²⁴ kg,

R = 6400km = 6.4 × 10⁶ m,

G = 6.67 × 10^-11 N.m²/kg², g =?

g = \(\frac{GM}{R^2}\)

The magnitude of the acceleration due to gravity at the surface of the earth = 9.77 m/s².