Chapter 8, Problem 54EP

Oil at 80°F ( $\rho =56.8{\text{lbm/ft}}^3$ and $\mu =0.0278\text{lbm/ft}\cdot \text{s}$ ) is flowing steadily in a 0.5-in-diameter, 175-ft-long pipe. During the how, the pressure at the pipe inlet and exit is measured to be 80 psi and 14 psi, respectively. Determine the flow rate of oil through the pipe assuming the pipe is (a) horizontal, (b) inclined 20° upward, and (c) inclined 20° downward.