Viscosity measurement ofa liquid. one use of the hagen-poiseuille equation (2.10-2) is in determining the viscosity of a liquid by measuring the pressure drop and velocity of the liquid in a capillary of known dimensions. the liquid used has a density of 912 kg/m and the capillary has a diameter of 2.222 mm and a length of ó.1585 m. the measured flow rate was 5.33 x 10- m'/s of liquid and the pressure drop 131 mm of water (density 996 kg/m'). neglecting end effects, calculate the viscosity of the liquid in pa s.