Problem #$5$

A cast $-$iron horizontal pipe is used to carry water at mean velocity of $6f\frac{t}{s}.$ The pipe has a

diameter, $D=6$ inches, length $L=200ft$ and has roughness coefficient of $0\mathrm{.}0004$ ft $.$

Calculate:

a$)$ The head loss

b$)$ The pressure drops,

c$)$ The input power to the pump required to convey the water $($assume pump efficiency of

$70\%$