During an experiment, three aluminum balls (rs 5 2600 kg/m3) having diameters 2, 4, and
Chapter 11, Problem 11-112(choose chapter or problem)
During an experiment, three aluminum balls (rs 5 2600 kg/m3) having diameters 2, 4, and 10 mm, respectively, are dropped into a tank filled with glycerin at 228C (rf 5 1274 kg/m3 and m 5 1 kg/ms). The terminal settling velocities of the balls are measured to be 3.2, 12.8, and 60.4 mm/s, respectively. Compare these values with the velocities predicted by Stokes law for drag force FD 5 3pmDV, which is valid for very low Reynolds numbers (Re ,, 1). Determine the error involved for each case and assess the accuracy of Stokes law
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