Pressure of water tank

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  • #1
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Homework Statement


1)
The water level in a large tank supplying a small town is 37m high. Water is pumped up for storage in the evenings and allowed to free-fall down as needed during the day. The street-level water pressure is...
2) How high should a vertical pipe filled with water be if a gauge at its bottom is to read a pressure of 400kPa due only to the liquid?


Homework Equations


P= pgh = F/A


The Attempt at a Solution


1)
answer: 36x 10^4 Pa
2)
answer: 3x 10^4 Pa

I have been trying to get these right answers using the equations above..
But, I have no idea..T_T
Please help!
 

Answers and Replies

  • #2
PhanthomJay
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Homework Statement


1)
The water level in a large tank supplying a small town is 37m high. Water is pumped up for storage in the evenings and allowed to free-fall down as needed during the day. The street-level water pressure is...
2) How high should a vertical pipe filled with water be if a gauge at its bottom is to read a pressure of 400kPa due only to the liquid?


Homework Equations


P= pgh = F/A


The Attempt at a Solution


1)
answer: 36x 10^4 Pa
yes
2)
answer: 3x 10^4 Pa
I don't know what you did here, but the problem is asking for the height, when the pressure is 400 kPa (40x 10^4 Pa). Use the same equation you used for the first part. (you don't need to know F or A).
 

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