I've been arguing with my cousin about this, I say it wouldn't fly, he says it will.

Imagine a 747 sitting on a conveyor(treadmill) as long and wide as a runway. The conveyor is designed to move in the opposite direction at the exact speed of the wheels on the jet. Can the jet take off?


I say no because the jet will not move relative to the ground if the treadmill moves exactly the opposite direction at the exact speed of the wheels, it will never develop airflow under and over the wings to create lift. It will stay in one place. Anyone?