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Re: Would the plane take off?
Lets look at the facts...
An aircraft wing needs air passing over it to provide lift to take off.
If the conveyer belt is traveling at the exact same speed but in the opposite direction then the plane WILL stay stationary. Although on full power via the engines.
Think of it like you running on a tread mill when you are running at say 7 mph and the belt is turning at the same speed you do not move. You also do not feel the wind in your face because you are not moving.
This is the exact same as the aircraft just on a bigger scale. Hence no air passing over the wing so no lift.
If the plane could take off (which it cant) air craft carriers would most certainly use them to shorten take offs. Hell if it worked you could have 3 or 4 planes taking off at a time as you would only need about 35 feet or so of "conveyor belt". This could also be stuck on the back of a truck so a jet could take off practically anywhere.
So i am affraid if you think the plane would take off your sadly mistaken.