- #1

Dennydont

- 45

- 0

## Homework Statement

A falling sphere viscometer measures the viscosity of a liquid from the terminal velocity of a tiny, falling sphere. One such device determines that a tiny sphere of radius 46 μm falls through a liquid with a terminal velocity of 2.5 mm/s. If the density of the sphere is 4171 kg/m3 and the density of the liquid is 718 kg/m3 what is the shear viscosity of the liquid?

r sphere = 46 μm

ρ sphere = 4171 kg/m^3

ρ liquid = 718 kg/m^3

v = 2.5 mm/s

## Homework Equations

F = 6πηrv

Continuity: ρAv

## The Attempt at a Solution

Would I be able to find the Force by using the equation: F = ρAv

^{2}which is just the continuity equation times velocity?