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Old 1st July 2008, 16:16   #48 (permalink)
barit1
 
Join Date: Feb 2005
Location: flyover country USA
Age: 67
Posts: 2,789
Quote:
Surely a wing needs some force on it to keep it floating, and without the mechanism that produces that force, surely it would not have a force acting on it
Think of the rings of Saturn. Now think of all those millions of ring particles connected to each other in a solid mass, with the centre of mass of this ring object coinciding with the planet's centre.

Now freeze the ring so it's stationary WRT the planet, not orbiting around it. Gravity will keep the two centres of mass together!

(What does this have to do with aerodynamics? gee--- duh--- )
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