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Fluid Force. Help exam today!

  1. May 7, 2009 #1
    A metal oil tank has cross-section that is a square rotated 45 degrees as shown in the figure above. Its height is 12 ft and width is 12 feet. The oil in the tank has a weight-density of 57 lb/ft3.
    Write a definite integral that expresses the fluid force on the end of the tank when the oil is 4 feet deep?

    Here is a link to the photo :
    http://img17.imageshack.us/img17/2294/76984288.jpg [Broken]

    hopefully you can make it out.

    I am not sure how to set up the definite integral.
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. May 7, 2009 #2


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    Science Advisor

    Well, I think you can figure out out that
    [tex] f = pA[/tex]

    Area is a function that you have. Pressure is a function as well. What are these functions?
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