Difference between revisions of "Template:Gr/doc"

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where M is body's mass in 10<sup>21</sup>&nbsp;kg, R is radius in km and PRE is the number of digits after decimal dot in the result (default is 3). The result is expressed in m/s<sup>2</sup>.
 
where M is body's mass in 10<sup>21</sup>&nbsp;kg, R is radius in km and PRE is the number of digits after decimal dot in the result (default is 3). The result is expressed in m/s<sup>2</sup>.
  
Example (escape velocity of [[Titania (moon)|Titania]]): M=3.526{{Esp|21}}&nbsp;kg, R=788.9&nbsp;km.
+
Example (escape velocity of [[Titania (moon)|Titania]]): M=3.526{{E-sp|21}}&nbsp;kg, R=788.9&nbsp;km.
  
 
g={{Gr|3.526|788.9}}&nbsp;m/s<sup>2</sup>.
 
g={{Gr|3.526|788.9}}&nbsp;m/s<sup>2</sup>.

Revision as of 17:40, 24 August 2015

Usage

This template calculates surface gravity g of a spherical body of the mass M and radius R:

<math>g=\frac{G*M}{R^2}</math>.

G is the gravitational constant. The template should be used in the following way:

{{Gr|M|R|PRE}},

where M is body's mass in 1021 kg, R is radius in km and PRE is the number of digits after decimal dot in the result (default is 3). The result is expressed in m/s2.

Example (escape velocity of Titania): M=3.526 × 1021 kg, R=788.9 km.

g=0.378 m/s2.

See also

  • {{V2}} — computes escape velocity.