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Article #3754Re: a weight and lift puzzle
From: Trevor Calder
Date: Tue, 28 Aug 2001 00:45
Date: Tue, 28 Aug 2001 00:45
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"james" <aviator_38@ReallyHotmail.com> wrote in message news:<9m9r3n$2sk$1@newsie.singa.pore.net>... > " A 100 ton cargo aircraft is loaded with 50 tonnes of birds, sitting on the > floor of the cargo room, and the aircraft is flying straight and level at > cruising altitude. The total weight of the aircraft is 150 tonnes, and thus > the aircraft wings produces a total lift of 150 tonnes. > Suddenly all he little birds start flying around in the cargo room. > How much lift must the wings produce now to keep the aircraft flying > straight and level? " The correct answer is that it isn't the lift produced by the wings which keeps the plane flying straight and level. It's the actions of the pilot using the control surfaces which do so. trevor smartarse
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fd648,b7167b73618a528f X-Google-Attributes: gidfd648,public X-Google-ArrivalTime: 2001-08-27 17:45:31 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!postnews1.google.com!not-for-mail From: trevorcalder@my-deja.com (Trevor Calder) Newsgroups: aus.science Subject: Re: a weight and lift puzzle Date: 27 Aug 2001 17:45:31 -0700 Organization: http://groups.google.com/ Lines: 16 Message-ID: <519bb921.0108271645.4636d284@posting.google.com> References: <9m9r3n$2sk$1@newsie.singa.pore.net> NNTP-Posting-Host: 63.97.240.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 998959531 1965 127.0.0.1 (28 Aug 2001 00:45:31 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: 28 Aug 2001 00:45:31 GMT