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Lift a hemispherical dome on a level surface filled with wat

  1. Feb 12, 2017 #1
    phys.png Hi, I have this problem where I am asked to find out which angular velocity I need to have to lift this 30 tons heavy dome with a hole on the top. I have attached a sketch and how I tried to solve it, but i get the wrong answer.

    Right answer is 1,95 rad/s.

  2. jcsd
  3. Mar 16, 2017 #2
    Sorry, but I think that the sketch can´t be seen...
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