Water at a pressure of 4.20 atm at street level flows into an office building at a speed of 0.65 m/s through a pipe 6.60 cm in diameter. The pipes taper down to 2.20 cm in diameter by the top floor, 28.0 m above. Calculate the water pressure in such a pipe on the top floor in Pa.

Question

I attempted the problem and got 271465 Pa but it is incorrect.

Answer 1

first, use the law of continuity to determine outlet flow
(area1*velocity1)=area2*velocity2

then straight Bernoluli's formula. You should get the answer ok. If not post your work and I will check later.