Conservation of Fluid Mass

1. The problem statement, all variables and given/known data



Air is blown through a circular and horizontal Venturi tube, as shown in the figure below. The diameters of the narrow and wider sections of the tube are given, and the height h of the mercury column is measured to be 1.00 mm. What are the air speeds in the wider and the narrower sections of the tube? The density of mercury is 13,600 kg/m3. (Assume the density of air is 1.29 kg/m3.)



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2. Relevant equations

P + 1/2pv^2 + pgh = constant



A1v1 = A2v2



3. The attempt at a solution