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Homework Help: Archimede's law and helium help

  1. Dec 7, 2004 #1
    Suppose I knew the densities of air and helium and I make a helium balloon. If I know the lift (in Newtons), how can I find the volume of the balloon?
  2. jcsd
  3. Dec 7, 2004 #2


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    Aplly Archimede's law correctly.U should be getting the ratio between the lift and the product between the difference of densities and the gravitational acceleration.
  4. Dec 7, 2004 #3
    Do you mean Lift/(g(d2 - d1)) That gives a very large answer.
    Last edited: Dec 7, 2004
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