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Homework Help: I need help finding gauge pressure

  1. Mar 26, 2007 #1
    1. The problem statement, all variables and given/known data

    Cylindrical tank of water is 20m tall, and full. atmospheric pressure is 1.01x10^5 Pa and the density of water is 1000Kg/m^3. Find absolute pressure 6m above the bottom.

    2. Relevant equations

    P=P*sub*a + pgh

    3. The attempt at a solution

    I got so far... P=(1.01 x 10^5) + (1000)g(6)
    How do i find g?????what is g????????????
    Last edited: Mar 26, 2007
  2. jcsd
  3. Mar 26, 2007 #2
    Isn't g gravity? Which is a given constant most of the time.
  4. Mar 26, 2007 #3
    u're finding the pressure exerted by 6m of water?
  5. Mar 26, 2007 #4


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    Science Advisor

    Good point. The water tank is 20 m high and the gauge is 6 m above the base so how many meters below the water line is it?
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