# Answer on Mechanics | Relativity Question for Janine

Question #17148

Calculate the force of gravity on a 22 kg mass if it were 6.4 106 m above Earth's surface (that is, if it were 2 Earth radii from Earth's center.) The mass of Earth is 6. 1024 kg.

Expert's answer

The magnitude of the gravity force acting on a 22 kg mass if it were 6.4*10^6 above Earth's surface is

F = G*m*M/r² =

= 6.67384×10^(-11)[m³/kg/s²] * 22[kg] * 6×10^24[kg] / (2*6.4*10^6[m])² =

& asymp; 53.7687[N].

F = G*m*M/r² =

= 6.67384×10^(-11)[m³/kg/s²] * 22[kg] * 6×10^24[kg] / (2*6.4*10^6[m])² =

& asymp; 53.7687[N].

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