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Work Integral problem

  1. Mar 28, 2004 #1
    A hemispherical tank of radius 5 feet is situated so that its flat face is on top. It is full of water. Water weighs 62.5 pounds per cubic foot. The work needed to pump the water out of the lip of the tank is ? foot-pounds.


    I tried evaluating the integral of pi(125x/3)(5-x)^2 from 0 to 5.

    What am I doign wrong? I cannot figure this out for the life of me, spent about the last hour on a seemingly simple problem that continues to stump me.
     
  2. jcsd
  3. Mar 28, 2004 #2

    Doc Al

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    Staff: Mentor

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