("Michael Ware" wrote)
You are taking the statement 'a conveyer belt that moves in the opposite
direction at exactly the speed that the airplane is moving forward' to
mean that somehow there is a force being applied to the mass of the
aircraft, equal and opposite the thrust generated by the propellor. The
only place the treadmill can exert any force an the airplane is the only
place the treadmill is touching the airplane: the wheels. Any motion of
the treadmill belt will be translated into rotation of the wheels. This
will not prevent the aircraft from moving forward, through the air and
taking off.


THE AIRPLANE WILL NOT MOVE. (That's my vote)

The rotating wheels + gravity (Thank you Sir Isaac!) ANCHOR the plane to the
treadmill. Plane/prop move forward, treadmill/wheels fall back. The plane is
attached to the wheels. Try it in front of you with a ruler and a magic
marker.

That airplane is doing 150 mph down that runway, only the runway is really a
treadmill which is matching that speed. End result is = to an Olympic
sprinter on the same treadmill - I can stand next to him for his entire 10
second (27 mph) race.


Montblack 83.7
(I thought some of double-digit people needed to be heard from. g)