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The earth pushing on a wing, revisited



I have one last thought on the subject on whether the earth pushes on the
wing. Take the situation of an aerobatic aircraft with SYMMETRIC wings.
At the bottom of a fast dive the pilot pulls back hard on the stick and
pulls a force of +6g. He then rushed up and at the top pushes hard
forward on the stick and produces a force of -6g. Clearly the earth could
not have pushed down on the wings at the top. Can it be that one has to
use different physics at the top and the bottom of this maneuver?

David Anderson
Dfa@fnal.gov



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David F. Anderson
Fermi National Accelerator Laboratory
PO Box 500, MS-220
Batavia, IL 60510
(630) 840-3471; FAX (630) 840-6039
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