3.19 Water flows downward along a pipe that is inclined at 30 below the horizontal, as shown. Pressure difference pA−pB is due partly to gravity and partly to friction. Derive an algebraic expression for the pressure difference. Evaluate the pressure difference if L=5 ft and h=6 in.

Transcribed Image Text:

Water 30 B T T h Mercury- 12 P3.19 Iz te