An air bubble of radius r rises steadily through a liquid of density ρ with velocity v. The coefficient of viscosity of liquid is

Engineering

Physics

Viscosity

Question

$\frac{2}{9} \frac{r^{2} ρg}{v}$

$\frac{2}{9} \frac{vρg}{r^{2}}$

$\frac{2}{9} \frac{ρg}{{vr}^{2}}$

$\frac{2}{9} \frac{r^{2} g}{vρ}$

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F_stokes = F_buoyancy

$6 πηrr = (\frac{4}{3} {πr}^{3}) ρg$

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