Stoke's Law (drag force)

Last modified by

on

Jul 24, 2020, 6:28:07 PM

Created by

on

Aug 17, 2015, 6:05:31 PM

F_{d r a g} = 6 π \cdot 0.0000181 \cdot R \cdot V

$F_(drag) = 6pi * 0.0000181 * "R" * "V"$

(μ) Dynamic viscosicty

$(mu)"Dynamic viscosicty"$

(R) Raidus of spherical object

$(R)"Raidus of spherical object"$

(V) Velocity of object

$(V)"Velocity of object"$

Dynamic Viscosity

The dynamic viscosity of air depends mostly on the temperature.
At 15 °C, the viscosity of air is 1.81 x 10^-5 kg/(m·s), 18.1 μPa.s or 1.81x10^-5 Pa.s.

Applications

Stoke's law and equation has been found useful in low velocity (under 55 mph) environments such as the flight of a football. Note: a football is 6.8" across, and hence has a radius (R) of 3.4".

References

Wikipedia - https://en.wikipedia.org/wiki/Viscosity

This equation, Stoke's Law (drag force), is used in 2 pages

Calculators

Equations and Data Items

Collections

• Ballistics, Firearms and Ammunition Collection by MichaelBartmess

• Football Collection by MichaelBartmess

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Stoke's Law (drag force)

Dynamic Viscosity

Applications

See Also

References

Datasets

Equations and Data Items

Calculators

Equations and Data Items

Collections