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Find the hydrostatic pressure on the bottom of the aquarium in lb/ft^2

  1. Mar 6, 2013 #1
    1. The problem statement, all variables and given/known data

    An aquarium 5 ft long, 1 ft wide, and 5 ft deep is full of water. (Recall that the weight density of water is 62.5 lb/ft3.)

    (a)Find the hydrostatic pressure on the bottom of the aquarium in lb/ft^2


    2. Relevant equations

    hydrostatic pressure = ρgd = δd
    ρ = 62.5 lb/ft^3
    g = 9.8 m/s^2
    d = 5ft

    3. The attempt at a solution

    The equation is straightforward, but obtaining my answer in the unit asked, that's the problem. How does eliminate s^2?
     
  2. jcsd
  3. Mar 6, 2013 #2

    haruspex

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    It says "weight density", and it asks for the answer in units of lb/ft^2, so I would assume all references to lbs here mean "lbs weight", not lbs mass. That means you don't need to multiply by g - it's included in the units.
     
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