Quote:
Originally posted by JayZ:
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so back to the original problem, any thrust created by the plane to move it forward is counteracted by the conveyor, therefore there is no forward motion, therefore the plane does not fly.

jeffw, just out of curiosity, why wouldn't you trust the aerospace engineer? i'm sure that he has taken several physics courses past the grade 9 level. are you an engineer yourself?
That's not my fbd, it's Branden's. I posted it becaise I deemed it useful.

But a 3D fbd isn't even necessary in this case. We have a certain airspeed required for takeoff. So the question is simply whether the wheels roll and whether there is thrust. As long as the wheels roll and we have thrust, the plane will achieve the required airspeed for take-off.

This should be simple enough to understand once you thoroughly read the post you are commenting on.