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Pressure in the fluid.

  1. Oct 7, 2009 #1
    In this attached image, a force is applied through a piston cylinder arrangement of cross section 1 cm...this force is uniformly distributed throughout the 1cm wide piston...so there's a certain pressure (x) that it poses on the fluid.

    Will the fluid pressure under action of this force be = x?

    Though it obviously should be, but I see some major advantages of this arrangement, that's why I'm asking.

    Attached Files:

  2. jcsd
  3. Oct 7, 2009 #2
    It will, if it's a quasistatic process.
  4. Oct 7, 2009 #3

    Doc Al

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    Staff: Mentor

    At the top of the fluid, yes. At depths below the surface, you'll need to add a ρgh term due to the weight of the fluid.
  5. Oct 7, 2009 #4
    It's not a process, it's a state.
  6. Oct 7, 2009 #5
    Assume no gravity situation.

    Verdict:Yes it's true.
  7. Oct 7, 2009 #6


    Staff: Mentor

    Yes, this is essentially how hydraulics work.
  8. Oct 8, 2009 #7

    Doc Al

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    Staff: Mentor

    Yes, this is Pascal's principle.
  9. Oct 12, 2009 #8
    Ok, thanks a lot everyone!
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