Calcolatore Gravita Planetaria — Formula
## Planet Surface Gravity
### Ratio Formula
**g / g_Earth = (M / M_Earth) / (R / R_Earth)²**
This avoids needing G and absolute values. Just enter the planet's mass and radius relative to Earth.
Examples: Mars ≈ 0.38 g, Jupiter ≈ 2.53 g, Moon ≈ 0.17 g.
### Ratio Formula
**g / g_Earth = (M / M_Earth) / (R / R_Earth)²**
This avoids needing G and absolute values. Just enter the planet's mass and radius relative to Earth.
Examples: Mars ≈ 0.38 g, Jupiter ≈ 2.53 g, Moon ≈ 0.17 g.
Esempio Risolto
Mars: 0.107 Earth masses, 0.532 Earth radii.
- g/g_E = 0.107 / 0.532² = 0.107 / 0.2830 = 0.378
- g = 0.378 × 9.807 = 3.71 m/s²
- Mars gravity is about 38% of Earth's.