Difference between revisions of "Template:Gr/doc"
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G is the [[gravitational constant]]. The template should be used in the following way: | G is the [[gravitational constant]]. The template should be used in the following way: | ||
| − | <nowiki>{{Gr|M|R| | + | <nowiki>{{Gr|M|R|PRE}}</nowiki>, |
| − | where M is body's mass in 10<sup>21</sup> kg, R is radius in km and | + | where M is body's mass in 10<sup>21</sup> kg, R is radius in km and PRE is the number of digits after decimal dot in the result. The result is expressed in m/s<sup>2</sup>. |
Example (escape velocity of [[Titania (moon)|Titania]]). M=3.526{{Esp|21}} kg. R=788.9 km: | Example (escape velocity of [[Titania (moon)|Titania]]). M=3.526{{Esp|21}} kg. R=788.9 km: | ||
Revision as of 17:31, 28 June 2009
| 40px | This is a documentation subpage for Template:Gr. It contains usage information, categories and other content that is not part of the original template page. |
Usage
This template calculates surface gravity g of a spherical body of the mass M and radius R:
<math>v2=\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. The result is expressed in m/s2.
Example (escape velocity of Titania). M=3.526 kg. R=788.9 km:
v2=0.378 m/s2.