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G-force of wind on a persons body.

  1. Jul 10, 2012 #1
    After doing some work with a painter friend we were coming home and I put my arm outside of the window as we were going 70 miles an hour. Wondering what the g-forces would be on my arms and hand?

    Thank you
     
  2. jcsd
  3. Jul 11, 2012 #2

    CWatters

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    There would be no g-force on your arm...

    Presumably your arm didn't dissapear behind that car and you were able to hold it out in a more or less stable position? In that case you will feel a force on it due to drag, but it's a constant force not an acceleration so the "g-force" would be zero.

    If the airstream was turbulent and your arm flapped up and down then there would be acceleration. Quite hard to quantify though.
     
  4. Jul 11, 2012 #3

    CWatters

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    Thinking about it some more I suppose you could say that the force due to drag _feels_ like the force due to gravity. I'd estimate it as equivalent to 3-5g.
     
  5. Jul 11, 2012 #4
    Thank you for your reply and explanation you gave. I was just curious and you satisfied that curious thread. Thank you.
     
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