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Hydrostatic pressure

  1. Oct 31, 2013 #1
    Law of hydrostatic pressure is: Ph=p*h*g. That what I do not undestand is,why we care about the height?

    Thanks.
     
  2. jcsd
  3. Oct 31, 2013 #2
    h is the height of the liquid column above the location where Ph is the pressure. More liquid above the location means more weight bearing down, so more pressure. The formula just means is that pressure is higher at greater depths.
     
  4. Oct 31, 2013 #3
    Thank you!!!
     
  5. Oct 31, 2013 #4
    That is an unusual notation. Usually p means pressure. In your equation p means density which is usually represented by ρ. The equation usually reads P = ρgh
     
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