# Gravity Equations Formulas Calculator

## Science Physics Kepler's Third Law

Solving for planet mass.

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

#### Inputs:

 satellite mean orbital radius (r) meter attometer centimeter chain dekameter decimeter exameter femtometer foot gigameter hectometer inch kilometer light year link megameter micrometer micron mile millimeter nanometer petameter picometer rod terameter yard satellite orbit period (T) second century day decade hour millisecond minute week year

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#### Conversions:

 satellite mean orbital radius (r) = 0 = 0 meter satellite orbit period (T) = 0 = 0 second

#### Solution:

 planet mass (M) = HAS NOT BEEN CALCULATED

#### Other Units:

Change Equation
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.

by Jimmy Raymond