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Fluid Mechanics - Linear Momentum

  1. Sep 8, 2009 #1
    j7vmlv.jpg


    I know the equation for conservation of linear momentum, and Bernoulli's equation:
    6qbouh.png
    2sb1su9.png

    So I've tried using Bernoulli's equation to find V1, then use the continuity principle to find V2, but then I get stuck on the mass flow rate.

    I tried a different approach by trying to convert mass flow rate and velocity into variables I know, such as density, A1 and A2 but I think really I'm just stuck in correctly identifying the external (body) forces on the fluid and the surface forces on the fluid.

    Many thanks for any help offered!

    Emma
     
  2. jcsd
  3. Oct 29, 2009 #2
    I'm stuck on this very same question... any help?
     
  4. Oct 29, 2009 #3
    You go to UNSW? Still haven't worked it out...I'll just hope it's not in the final!
     
  5. Oct 29, 2009 #4
    Ha ha yeah i do. I'm thinking this question is a bit too nasty for an exam
     
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