Solution Found!
’ law describes sedimentation of particles in liquids and
Chapter 18, Problem 28PE(choose chapter or problem)
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 3? bearing (density 7.8×10? kg/m3 , diameter 3.0 mm ) is dropped in a container of motor oil. It takes 12 s to fall a distance of 0.60 m. Calculate the viscosity of the oil.
Questions & Answers
QUESTION:
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 3? bearing (density 7.8×10? kg/m3 , diameter 3.0 mm ) is dropped in a container of motor oil. It takes 12 s to fall a distance of 0.60 m. Calculate the viscosity of the oil.
ANSWER:Step-by-step solution Step 1 of 3 The metal ball released in the water reaches the terminal velocity in a very short time. So we can assume its motion to be moving with constant terminal velocity. The distance traveled The time taken Terminal velocity The terminal velocity is 0,05m/s