Flying birds

Date:         29 Apr 99 22:10:46 
From:         "John Gunnar Enebak" <>
Organization: Telenor Online Public Access
Followups:    1 2 3 4
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You fill a cargo plane with 20 tons of birds, and fly 500 knots at
10.000 feet with the birds sitting on the floor of the plane.

Suddenly all the birds start flying around inside the plane. Will the
plane then loose 20 tons of weight and start a climb?

John G. Enebak