(Solved): with proof of the viscosity equation A falling ball experiment is done to find the viscosity of a li ...

A falling ball experiment is done to find the viscosity of a liquid. The following information are available. Diameter of the sphere $=0.01\mathrm{m}$ Overall height of the cylinder $=3.5\mathrm{m}$ s.g. fluid $=0.9$ s.g. sphere $=2.7$ Travel distance $=3\mathrm{m}$ Travel time $=8\mathrm{s}$ The viscous drag force on a sphere is given by Stokes' law Where: : is the viscosity of the fluid that the sphere is falling through, $\mathrm{r}$ : is the radius of the sphere, $v:$ is the velocity of the sphere. Find the viscosity of the liquid by providing a proof of the viscosity equation.