Figure 7.23 shows a small pump in an automatic washer discharging into a laundry sink. The...

Figure 7.23 shows a small pump in an automatic washer discharging into a laundry sink. The washer tub is 525 mm in diameter and 250 mm deep. The average head above the pump is 375 mm as shown. The discharge hose has an inside diameter of 18 mm. The energy loss in the hose system is 0.22 N•m/N. If the pump empties the tub in 90 s, calculate the average total head on the pump.

FIGURE 7.23