air speed across wing gives lift, since on a conveyor belt makes plane stationary I do not see lift off happening. Surely I am missing something here.
I suspect you are going to have to give up on this one. They simply can't get their head around the physical mechanics of it all.... We are all "wired" differently.There’s no connection between the force that is pushing the plane forward and the conveyor belt. The belt can be moving as fas as it wants and the only force it will place on the plane is the frictional force found in the wheel bearings. Once the engines overpower that force the plane will move forward.
The wheels spin freely. They could spin as fast as they want and it doesn’t stop the ability of the engine to move the plane forward.
this video is only 3 minutes. Please Watch it.