Calculadora de Velocidade de Escape Planetária — Formula
## Planetary Escape Velocity
The escape velocity is the minimum speed an object needs to leave a planet's gravitational well without further propulsion.
### Formula
**v_esc = sqrt(2 G M / R)**
- *G* = 6.674 x 10^-11 N m2 / kg2
- *M* = planet mass
- *R* = planet radius
For Earth this is about 11.2 km/s.
The escape velocity is the minimum speed an object needs to leave a planet's gravitational well without further propulsion.
### Formula
**v_esc = sqrt(2 G M / R)**
- *G* = 6.674 x 10^-11 N m2 / kg2
- *M* = planet mass
- *R* = planet radius
For Earth this is about 11.2 km/s.
Exemplo Resolvido
Earth: M = 5.972e24 kg, R = 6.371e6 m.
- v_esc = sqrt(2 G M / R)
- 2 G M = 2 * 6.674e-11 * 5.972e24 = 7.972e14
- v_esc = sqrt(7.972e14 / 6.371e6)
- v_esc = sqrt(1.251e8)
- v_esc = 11 186 m/s = 11.19 km/s