Question

Calculate the acceleration due to gravity at the surface of the moon. The moon’s radius is about 1.7 × 106 𝑚 and its mass is 7.4 × 1022 𝑘𝑔.

Answer 1

$g=F/m=GM/r^2=6.67\cdot10^{-11}\cdot7.4\cdot10^{22}/(1.7\cdot10^6)^2=1.7\ (m/s^2)$