Particle Technology

Dilute systems - sedimentation

Problems 5.7

Question 1.iii

The Stokes's settling equation is:
Stokes's law
Complete the following:
Particle diameter (microns): 1 10 50 100 1000
log(Px): --- --- 0.156 0.457 1.457
log(U/Q): --- --- -1.072 -0.513 0.759
Settling velocity (m s-1): --- --- 0.00243 0.0088 0.165
Stokes's settling velocity (m s-1): 9.81x10-7 A 0.00245 0.0098 0.98


The term A missing from the above is:

  a) 9.81x10-3
b) 9.81x10-4
c) 9.81x10-5
d) 9.81x10-6
Note, none.

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