Mining Engineering > GATE 2026 > Mine Environment - Dust Settling (Stokes Law)
Dust particles from a blasting operation rise up in the atmosphere to a height of 500 m. The viscosity of air is 1.80 × 10-5 kg m-1 s-1. Assume the particles have quiescent settling (no turbulence) in atmosphere. Neglecting air density, the settling time, in days, of a dust particle of 2.5 µm diameter and 3600 kg m-3 density is _______________. (rounded off to two decimal places)
Correct : 8.49
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