# Gravity Equations Formulas Calculator

## Science Physics Gravitational Acceleration

Solving for planet mass.
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:

 gravitational acceleration (a) meter/second^2centimeter/day^2centimeter/hour^2centimeter/minute^2centimeter/second^2foot/day^2foot/hour^2foot/minute^2foot/second^2inch/second^2kilometer/day^2kilometer/hour^2kilometer/minute^2kilometer/second^2knot/secondmeter/day^2meter/hour^2meter/minute^2mile/day^2mile/hour^2mile/minute^2mile/second^2millimeter/second^2yard/second^2

#### Conversions:

 gravitational acceleration (a)= 0 = 0meter/second^2
 radius from the planet center (r)= 0 = 0meter

#### Solution:

 planet mass (M)= NOT CALCULATED

#### Other Units:

Change Equation
Select 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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