ESE 2020Q54
Q: According to Stokes' law, the rate of settling of the particles depends on the terminal settling velocity vt which is where dp = Particle diameter ρp = Density of particle ρa = Density of air μa = Velocity of air P = Air pressure C = Constant
(a)(g dp² / 18 μa)(ρp − ρa)(1 + 2C / dp P)
(b)(g dp² / 18 μa)(ρp + ρa)(1 − 2C / dp P)
(c)(g dp² / 18 μa)(ρp − ρa)(1 − 2C / dp P)
(d)(g dp² / 18 μa)(ρp + ρa)(1 + 2C / dp P)
Correct Answer: (b)
Detailed explanation coming soon.