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Calculating gauge pressure in lungs to produce certain speeds

  1. Jun 13, 2013 #1
    1. The problem statement, all variables and given/known data
    The human sneeze can reach speeds of 150km/hr. Calculate the gauge pressure in the lungs required to generate a flow with this speed at atmospheric pressure. Assume the density of the air is constant at 1.3 kg/m^3.

    2. Relevant equations



    3. The attempt at a solution

    I tried solving to get the gauge pressure but i need the height to do this. Also, i tried working with fluid formulas that have velocity in them but i keep getting stuck due to not having all the variables.
     
  2. jcsd
  3. Jun 13, 2013 #2
    I would think you could use the Bernoulli equation with the speed in the lungs set to zero. After all it starts out stationary.
     
  4. Jun 13, 2013 #3
    I might give that a go bud. Thanks!
     
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