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sci.gravitational-tidal-force Calculator
Calculates the tidal force exerted by the Moon or Sun across Earth's diameter: F_tidal ≈ 2GMmr/d³. The Moon's tidal force is 2.2× stronger than the Sun's despite the Sun's greater gravity — tidal force falls as 1/d³ (vs gravity's 1/d²), favouring the closer Moon.
Inputs
Body Mass Kg
Total mass of the body. Used with height to calculate BMI and estimate lean mass.
Object Mass Kg
Total mass (kg). Distinct from weight — weight = mass × gravity. Mass is constant; weight varies with location.
Distance Km
Separation between two points or total path length. Check that units are consistent throughout the calculation.
Object Size M
Reference formula or conversion factor shown for context.
Results
tidal force (N)
Sample size or count used in the calculation.
vs. gravity of Moon at Earth
The value at the specified point or condition.
tidal ratio F_tidal/F_grav
The proportional relationship between two quantities.
F_tidal = 2GMmL/d³
Reference formula or conversion factor shown for context.
Moon on 1m object at Earth
The value at the specified point or condition.
Roche limit
Reference formula or conversion factor shown for context.