phys101
posted by KABELO .
a homeowner wishes to drain her swimming pool by siphoning the water,whose depth is h,into a nearby gully a distance H below it,where H is much larger than h.She uses a pipe of crosssectional areea a,and the pool has surface area A.How long does it take to empty the pool if h=2m,H=20m,A=50meter squad,a=5centi meter squad?

Bernoulli's equation applies. Solve for flow rate.