A spherical particle falling at a terminal speed in a liquid must have the gravitational force balanced by the drag force and the buoyant force. The buoyant force is equal to the weight of the displaced fluid, while the drag force is assumed to be given by Stokes Law, Fs = 6πrηv. Show that the terminal speed is given by v = (2R2 g/9η) . (ρs − ρ1) , where R is the radius of the sphere, ρs is its density, and ρ1 is the density of the fluid, and η the coefficient of viscosity.
A spherical particle falling at a terminal speed in a liquid must have the gravitational force balanced by the drag force and the buoyant force. The buoyant force is equal to the weight of the displaced fluid, while the drag force is assumed to be given by Stokes Law, Fs = 6πrηv. Show that the terminal speed is given by v = (2R2 g/9η) . (ρs − ρ1) , where R is the radius of the sphere, ρs is its density, and ρ1 is the density of the fluid, and η the coefficient of viscosity.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter9: Fluids And Solids
Section: Chapter Questions
Problem 23P: A spherical weather balloon is filled with hydrogen until its radius is 3.00 m. Its total mass...
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A spherical particle falling at a terminal speed in a liquid must have the gravitational force balanced by the drag force and the buoyant force. The buoyant force is equal to the weight of the displaced fluid, while the drag force is assumed to be given by Stokes Law, Fs = 6πrηv. Show that the terminal speed is given by v = (2R2 g/9η) . (ρs − ρ1) , where R is the radius of the sphere, ρs is its density, and ρ1 is the density of the fluid, and η the coefficient of viscosity.
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