# 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. | ||

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. |

- Purpose of use
- For worldbuilding

[1] 2019/07/08 02:59 Female / 20 years old level / Self-employed people / Useful /

- Purpose of use
- Needs Gravitational Constant. The formula in my physics book says: Tf=4GMR/d^3

[2] 2019/05/21 00:56 Female / Under 20 years old / High-school/ University/ Grad student / A little /

- Purpose of use
- Problem set q with bad notes

[3] 2019/02/22 01:02 Female / 20 years old level / High-school/ University/ Grad student / Very /

- Purpose of use
- Fun

[4] 2019/02/03 08:20 Male / Under 20 years old / High-school/ University/ Grad student / Useful /

- Purpose of use
- A researcher
- Comment/Request
- What do these initials stand for: dF; dr, Mm; r?

[5] 2019/01/16 16:22 Male / 50 years old level / Self-employed people / Very /

- Purpose of use
- need units of tidal force calculations

[6] 2017/11/08 10:30 Female / Under 20 years old / High-school/ University/ Grad student / A little /

- Purpose of use
- Used to calculate a tidal force, added equations to a physics presentation

[7] 2017/05/22 08:01 Male / - / High-school/ University/ Grad student / 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] 2017/02/25 23:27 Male / 40 years old level / An engineer / Very /

- Purpose of use
- To corroborate calculations of tidal force on Proxima b.

[9] 2016/08/27 00:33 Male / 50 years old level / Others / Very /

- Purpose of use
- Calculation of tidal force on fictional star+world+moon system.

[10] 2015/08/28 12:20 Male / 30 years old level / Others / Very /

**To improve this 'Tidal force Calculator', please fill in questionnaire.**

**The hyperlink to [Tidal force]**