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the surface of water in an water tank on the top of a house is 4m above the tap level. find the pressure of water at the tap when the tap is closed is it necessary to specify that the tap is closed g=10m/s

the surface of water in an water tank on the top of a house is 4m above the tap level. find the pressure of water at the tap when the tap is closed is it necessary to specify that the tap is closed


g=10m/s

Grade:

2 Answers

Chetan Mandayam Nayakar
312 Points
9 years ago

if tap is closed P=density*g*4m

if tap is open, you have to use Bernouilles equation

B.V.Suhas Sudheendhra
43 Points
9 years ago

Consider the level of tap at ground level.

then the height of the water above this tap level is 4m

so the pressure is given by

P=hdg

therfore, P=4*1000*10

P=40000pa=40KPa

It is necessary to specify because if the tap is open the water starts flowing and to calculate pressure we have to use Bernouli theorm

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