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Problem 7: Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles in liquids achieve terminal velocity quickly. One can measure the time it takes for a particle to fall a certain distance and then use Stokes' law to calculate the viscosity of the liquid. Suppose a steel ball bearing (density 7.6 x 10^3 kg/m^3, radius 0.65 mm) is dropped in a container of motor oil. It takes 105 seconds to fall a distance of 0.55 m. Randomized Variables: d = 7.6 x 10^3 kg/m^3 r = 0.65 mm t = 105 s h = 0.55 m Calculate the viscosity of the oil assuming the ball achieves terminal velocity immediately:

          Problem 7: Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles in liquids achieve terminal velocity quickly. One can measure the time it takes for a particle to fall a certain distance and then use Stokes' law to calculate the viscosity of the liquid. Suppose a steel ball bearing (density 7.6 x 10^3 kg/m^3, radius 0.65 mm) is dropped in a container of motor oil. It takes 105 seconds to fall a distance of 0.55 m.

Randomized Variables:
d = 7.6 x 10^3 kg/m^3
r = 0.65 mm
t = 105 s
h = 0.55 m

Calculate the viscosity of the oil assuming the ball achieves terminal velocity immediately:

149 problem 7 stokes law describes sedimentation of particles in liquids and can be used t0 measure viscosity particles in liquids achieve terminal velocity quickly one can measure the time 73941

Added by Irene L.

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