Quote:
Originally posted by BlueSky:
Quote:
Originally posted by Hawk:
[b]You people just don't get it.....If the conveyor is matching the plane's speed, the wheels will just be spinning twice as fast as the plane is actually travelling. However, the plane will still be moving forward......Forward motion will give the plane the lift required to take off. You are all STILL hung up on the wheels vs the conveyor. There is a third force at work here....the engines. And, yet again, I'll say that the conveyor is not working against the engines [b]AT ALL! The engines are working completely independant of the conveyor....[/b]
And you're hung up on thinking the plane is weightless. The wheels ARE exerting force on the conveyor - the weight of the airplane.[/b]
Exactly. The wheels are NOT irrelevant.
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist