# Gravity Equations Formulas Calculator

## Science Physics Critical or Escape Speed

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

#### Inputs:

 planet mass (M) kilogram grain gram milligram pound slug ton long ton metric ton short escape or critical speed (ve) meter/second centimeter/hour centimeter/second foot/day foot/second inch/hour inch/second kilometer/hour kilometer/second knot mach sea level 15 C meter/day mile/hour mile/second millimeter/second speed of light in vacuum yard/second

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#### Conversions:

 planet mass (M) = 0 = 0 kilogram escape or critical speed (ve) = 0 = 0 meter/second

#### Solution:

 planet radius (R) = 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