Question

phobos, a moon of mars has maas of 1.08 x 10^16 kg, and an average radius of 1.35x10^4 m. calculate the gravitational field strength at the surface of phobos

Answer 1

F = G Mm m /Rm^2

F/m = G Mm/Rm^2

= 6.67×10-11 m^3 kg-1 s-2 * 1.08*10^16kg/[1.35*10^4]^2m^2

Answer 2

500