Template:Escape velocity/doc

Usage

This template calculates escape velocity v₂ of a spherical body of the mass M and radius R:

$v_{2}={\sqrt {\frac {2GM}{R}}},$

where G is the Newtonian constant of gravitation. The template should be used in the following way:

{{v2|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 point in the result (default is 3). The result is expressed in km/s.

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

v₂ = 0.772 km/s.

See also

• {{gr}} — computes surface gravity.