Describe an experiment to measure the coefficient of viscosity of a liquid using Ponselle’s formula

• the liquid of density, ρ, passes slowly from a constant head tank through a capillary tube of length, l and radius r.
• for a height, h, of the tube, the volume V is collect in time t.
• the flow rate R = V/t is calculated
• the experiment is repeated for different value of V and h.
• a graph of R against h is plotted and slope S is obtained

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