g from M and r
g = GM/r² outside a spherically symmetric mass.
Calculator
How to use
g
Outside the body, g decreases with r.
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
g = GM/r² outside a spherically symmetric mass.
Outside the body, g decreases with r.
Educational use only. Check signs, units, and modeling assumptions (e.g. flat Earth g, no air resistance unless stated).
Model / formula
g = GM/r²
Result
9.8167 m/s² (magnitude, outside sphere)