如何计算Tidal Force
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Tidal forces arise from gravity gradient: near side attracted more than far side, stretching objects. Governs Moon stability and planetary rings.
分步指南
- 1Input primary mass, satellite mass, separation distance
- 2Calculate tidal force gradient
- 3Compare to self-gravity
例题解析
输入
Earth-Moon system
结果
Tidal force sufficient to cause 1m ocean tides
Moon receding ~3.8 cm/year
常见错误注意事项
- ✕Confusing tidal force with mass effect
- ✕Neglecting density in Roche limit
常见问题
When does tidal force destroy objects?
When exceeds self-gravity: Roche limit. Depends on density, composition.
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