Quote
Quote
A plane is standing on a runway that can move (like a giant conveyor
belt). This conveyor has a control system that tracks the [color:"red"]plane's speed [/color] 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?


Those 2 highlighted words should be enough to convince anyone that the plane will indeed lift off.



Very astute observation Lee. The riddle above says that the plane can acheive speed.



The conveyer could track the planes speed, and that will not have any effect on the plane moving foward against it. The wheels are ROLLING, and you can roll against something when your engines are pulling AIR. The wheels are not drive devices.


I could Hold a plane back with the treadmill going 200 mph he other way. Probbally with both hands, and a small rope. The rolling resistance is very small.

Plane takes off at 300 knots ground speed (due to conveyer rollling backwards) and 150 knots air speed. Period, no argument is valid against this.

NOW if the conveyer moved the total environment as in the AIR, and the ground, then the plane would NOT be able to take off. If this was a conventional wheel driven car... it would not move.

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