Problem $4$

Problem $5\mathrm{.}3\mathrm{.}31$

When the pump shown in Fig. P$5\mathrm{.}3\mathrm{.}31$ is stopped, there is no flow through the system and

the spring force is zero. With the pump running, a $6-$in$.-$diameter jet leaves the pipe, and the

spring force is $420$ lb $.$ The water surface elevation in the tank is constant. Determine the

water flowrate and the power consumed by the pump. Assume quasi$-$steady flow.

Use spring force $=400$lb$.$

Assuming $60$F water