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Homework Help: Pressure in horizontal rotating tube

  1. May 2, 2015 #1
    1. The problem statement, all variables and given/known data
    If there is a horizontal tube rotating on axis in horizontal plane. it is filled with an ideal gas , So which end will the pressure be higher ?
    the end on axis?? or the free end

    2. Relevant equations

    P.A= m .w^2 .r
    3. The attempt at a solution

    i think the free end should have higher pressure which provides centripetal force
     
  2. jcsd
  3. May 2, 2015 #2

    haruspex

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    Yes.
     
  4. May 2, 2015 #3
    but will the liquid exert a force on free end of tube ??
     
  5. May 2, 2015 #4

    haruspex

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    Liquid?
    I assume it's a closed tube, so yes the end of the tube will exert a force on the gas.
     
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