Quote:
|
Originally Posted by sanddrag
Wow, that other forum must not be full of really bright people.  Easy question. As mentioned previously, a plane's flight is based on it's relation to the air, not to the ground. Lift comes from engines pushing on the air, not from wheels pushing on the runway. |
true. but some are quite smart. and well...most are the normal "ur stupid" flaming.... but you gotta have an open mind to understand why both opinions are valid. everyone agrees that the plane must be moving forwards relative to the air to fly... but the plane isnt moving forwards relative to the air.. because the wheels are mounted to bearings which are on the axles... and to my knowledge there are no true frictionless bearings... and because of that friction, the conveyorbelt can keep the airplane from moving forwards relative to the air completely. ok. now shake your brains around and give them a nice stretch... and think slowly... at first the plane is sitting still. now the pilot turns on the enignes. afterburners are fine too. just no vtol technology allowed. so the plane should move forwards... but no, the plane CANT move forwards because the conveyorbelt
tracks the plane speed and tunes the speed of the conveyer to be exactly the same (but in the opposite direction). ... so the plane does not move. because if the plane moves 1mm forwards that would mean the conveyorbelt is not turning the belt at
EXACTLY the same speed as the plane.(but in the opposite direction)..
so simply put, the plane DOES NOT MOVE. but in which case where does the air being pushed by the plane's engines go? backwards. but since air molecules have inertia too, the plane should move forwards now. but it doesnt.. so in this problem, because of an improbable conveyorbelt control system, some parts of physics must be ignored... or looked into detail... depending on how you look at it.