The acceleration of gravity (g) is the acceleration an object experiences when the only force acting upon it is gravity. The force of gravity would be the net force and the acceleration would be the force of gravity divided by the object's mass.
g = Fgrav / mobject
Substituting Newton's expression for gravitational force into the numerator would result in a new equation for the acceleration of gravity which is applicable to locations other than on Earth's surface:
g = ( G • mobject • Mplanet / d2 ) / mobject
g = G • Mplanet / d2
where Mplanet represents the planet's mass and d represents the distance that the object is from the planet's center.
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