If the water in the pipe of Problem 6.89 is initially at rest, and the air pressure is maintained at 1.5 psig, derive a differential equation for the velocity V in the pipe as a function of time,...

If the water in the pipe of Problem 6.89 is initially

at rest, and the air pressure is maintained at 1.5 psig, derive

a differential equation for the velocity V in the pipe as a

function of time, integrate, and plot V versus t for t 5 0 to 5 s.