Homework Answers
Since the water is to be taken out at a height of 39m.
Thus the gauge pressure will be the pressure exterted by the water column having a heigh 39m as that will be the minimum pressure which must be present at the bottom of the pipe so as to make the water reach 39m.
Pressure = dgh
where h = 39m
g = 9.8 m/s2
d is the denisty of water = 1000 kg/m3
hence pressure = 1000 x 9.8 x 39
pressure = 382200 N/m2
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