Problem 8: Determine the radius of a water drop falling through air with a terminal velocity of 0.012 m/s.                                 

(Viscosity of air = 0.019 × 10^-3 N s m^-2           Density of air = 1.2 kg/m³

 Density of water = 1.0 × 10³ kg/m³).

Solutions

Given data           Terminal velocity of the water drop = 0.012 m/s,

                                Density of air = 1.2 kg/m³, Density of water = 1 × 10³ kg/m³

                                 Viscosity of air = 0.019 × 10^-3 N s m^-2

Required              Radius of the water drop =?

Formula

Put the values in the formula