# Tidal force Calculator

## Calculate the gravitational and tidal forces of the moon and the sun, and their respective ratios of those at apogee to those at perigee.

 Moon's mass kg distance km,eccentricity Sun's mass kg distance km,eccentricity Earth's mass kg,radiuskm
 Gravity is inversely proportional to the square of the distance, and tidal power is the cube of the distance.The tidal force of the moon is about 2.2 times larger than that of the sun.The ratio of the tidal force of the apogee and perigee is about 1.4 by the elliptical orbit of the moon.$\normal Gravitational\ force\hspace{30}F={\large\frac{GMm}{r^2}}\\[10]Tide\ force\hspace{30}T=-{\large\frac{dF}{dr}}R={\large\frac{2GMm}{r^3}}R\\[10]\hspace{110}R:\ radius\ of\ the\ Earth$

Tidal force
 [1-10] /12 Disp-Num5103050100200
[1]  2019/05/21 00:56   Female / Under 20 years old / High-school/ University/ Grad student / A little /
Purpose of use
Needs Gravitational Constant. The formula in my physics book says: Tf=4GMR/d^3
[2]  2019/02/22 01:02   Female / 20 years old level / High-school/ University/ Grad student / Very /
Purpose of use
Problem set q with bad notes
[3]  2019/02/03 08:20   Male / Under 20 years old / High-school/ University/ Grad student / Useful /
Purpose of use
Fun
[4]  2019/01/16 16:22   Male / 50 years old level / Self-employed people / Very /
Purpose of use
A researcher
Comment/Request
What do these initials stand for: dF; dr, Mm; r?
[5]  2017/11/08 10:30   Female / Under 20 years old / High-school/ University/ Grad student / A little /
Purpose of use
need units of tidal force calculations
[6]  2017/05/22 08:01   Male / - / High-school/ University/ Grad student / Very /
Purpose of use
Used to calculate a tidal force, added equations to a physics presentation
[7]  2017/02/25 23:27   Male / 40 years old level / An engineer / Very /
Purpose of use
Calculate tidal force effects on water bodies on Earth going back in time (when the moon was closer to Earth).
Comment/Request
Excellent calculator.
[8]  2016/08/27 00:33   Male / 50 years old level / Others / Very /
Purpose of use
To corroborate calculations of tidal force on Proxima b.
[9]  2015/08/28 12:20   Male / 30 years old level / Others / Very /
Purpose of use
Calculation of tidal force on fictional star+world+moon system.
[10]  2014/12/01 14:37   Male / 60 years old level or over / An engineer / Very /
Purpose of use
learn basik heat stresses of tides

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