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Homework Help: Simple Static Pressure problem, need help with units

  1. Sep 19, 2011 #1
    1. The problem statement, all variables and given/known data
    Hi i'm having trouble solving this physics problem if anyone can help it would be greatly appreciated !

    Static pressure problem: A bathtub contains water to a depth of 20 inches. Determine the pressure at the bottom of the bathtub in both [psia] and [psig] (a being absolute pressure and g being gauge pressure)

    2. Relevant equations
    im using P=pgh

    3. The attempt at a solution
    what i've tried doing was to find gauge pressure first: P=pgh=(1.94slug/ft^3)(32.2ft/s^2)(1.67ft). I got the 1.67 feet from converting 20 inches to feet. the answer i get is 104.11slug/s^2 but they want it in psi or lb/in^2 and i am having trouble converting these units =[
  2. jcsd
  3. Sep 19, 2011 #2
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