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Fluid dynamics help

  1. Jan 20, 2007 #1
    Hi, a pretty simple question here. Please refer to

    Go here
    If there was no small piston, and instead just a higher column of water on the left hand side, would it still operate like a hydraulic press?

    E.g. would the larger area of the large piston multiply the force from a narrow tube of water?

    Thanks if u can help confirm this
    Last edited by a moderator: Jan 20, 2007
  2. jcsd
  3. Jan 21, 2007 #2


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    Yes, if there was a column of water of height h on the left hand side, the water pressure at the level of the piston would be rho.g.h. The large piston puts a pressure F2/A2 on the water. If F2/A2 = rho.g.h, the system will balance.
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