Gravity Equations Formulas Calculator

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Solving for gravitational acceleration.

Note:
r must be greater than the radius of the planet

G is the universal gravitational constant
G = 6.6726 x 10^-11N-m²/kg²

Inputs:

Conversions:

planet mass (M)	=	0		=	0	kilogram
radius from the planet center (r)	=	0		=	0	meter

Solution:

gravitational acceleration (a)

HAS NOT BEEN CALCULATED

Other Units:

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Select an equation to solve for a different unknown

Newton's law of gravity

	gravitational force exerted between two objects
	mass of object 1
	mass of object 2
	distance between the objects

Kepler's third law

	satellite orbit period
	satellite mean orbital radius
	planet mass

gravitational acceleration

	gravitational acceleration
	planet mass
	radius from the planet center

escape or critical speed

	escape or critical speed
	planet mass
	planet radius

References - Books:

Tipler, Paul A.. 1995. Physics For Scientists and Engineers. Worth Publishers. 3rd ed.

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