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November 9th, 2006 03:51 PM #1
From: http://www.4x4wire.com/forums/showfl...4&fpart=1&vc=1
A plane is standing on a runway that can move (like a giant conveyor
belt). This conveyor has a control system that tracks the plane's
speed and tunes the speed of the conveyor to be exactly the same (but
in the opposite direction) instantly.
Will the plane be able to take off?
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November 9th, 2006 03:58 PM #2
Access denied???
:fly:
Edit *posting without thinking* no :bleh:
Edit2 maybe with gods helpLast edited by GasJunkie; November 9th, 2006 at 04:07 PM. Reason: forgot the extra "c"
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November 9th, 2006 04:46 PM #4
Ok lang. Wala din ang sagot dun. hehehe.
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November 9th, 2006 05:09 PM #6
it won't take off. kelangan ng wind drag to lift the airplane, walang kwenta kung mabilis ang gulong pero wala naman hangin.
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November 9th, 2006 05:35 PM #7
lilipad...
[SIZE="4"]lilipaaaaad...[/SIZE]
[SIZE="7"]TAKUUUURE!!!!!![/SIZE]
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TheOneThatIs
- Join Date
- Oct 2002
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- 1,306
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November 9th, 2006 05:43 PM #9
Actually, it's a trick question.
If the conveyor tracks the plane's speed and moves in the opposite direction at that speed, then the plane will take off... it's just that the wheels will be moving at twice the speed of the plane and conveyor.
If you program the conveyor to match wheel speed, it's still not feasible... as wheel speed will always increase faster than conveyor speed. If you perfectly match the force of the engines, though... you might be able to keep the plane on the ground (engine power translated to treadmill power), but that's nearly impossible.
An airplane is driven by engines that push against the air, not the ground. You'd need to put a fan programmed to blow wind against the front of the plane at the same speed as the engines to keep it stationary... but then, if the fan is strong enough, the airplane will lift off anyway.
It just won't be moving forward.
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