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(density ρsteel = 7200 kg/m3) is placed in an upward moving liquid Al

(density ρAl = 2360 kg/m3, viscosity μAl = 1 * 10–3 Pa.s and Reynolds number = 5 * 105). The force (F) exerted on the steel ball is expressed as F = f π R2(ρAl v2/2)where, f is friction factor (=0.2), v is the velocity of liquid Al and R is the radius of steelball.

The force exerted on the steel ball is

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