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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.

Водич корак по корак

  1. 1Input primary mass, satellite mass, separation distance
  2. 2Calculate tidal force gradient
  3. 3Compare to self-gravity

Worked Examples

Инпут
Earth-Moon system
Резултат
Tidal force sufficient to cause 1m ocean tides
Moon receding ~3.8 cm/year

Common Mistakes to Avoid

  • Confusing tidal force with mass effect
  • Neglecting density in Roche limit

Frequently Asked Questions

When does tidal force destroy objects?

When exceeds self-gravity: Roche limit. Depends on density, composition.

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