An irrigation system lies in a horizontal plane, with a large diameter pipe delivering water through a single line to three branches. The delivery pipe has an internal pressure p0 ¼ 200 kPa and is sufficiently large that internal kinetic energy terms can be neglected. Find the flow distribution in the four irrigation pipes if R1 ¼ 1.6 · 104, R2 ¼ 5.3 · 105, R3 ¼ 6.0 · 105, R4 ¼ 8.1 · 105 (all in units of s2=m5).
