Viscosity and Laminar Flow; Poiseuille’s Law (Problem 43)

Example 12.8 dealt with the flow of saline solution in an IV system. (a) Verify that a pressure of $1.62\times {10}^4{\text{N/m}}^2$ is created at a depth of 1.61 m in a saline solution, assuming its density to be that of sea water. (b) Calculate the new flow rate if the height of the saline solution is decreased to 1.50 m. (c) At what height would the direction of flow be reversed? (This reversal can be a problem when patients stand up.) Select the answer to part (a).