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Originally Posted by Dace
2.) "Do you believe lift would be generated if the plane remained stationary but its engines were on?"
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No i dont, but the plane on the treadmill wouldn't remain stationary.
Imagine if it were a glider on the treadmill, with a rope attached to another plane that flew alongside, would the plane that was flying be able to pull the glider off the treadmill?
The thrust of the plane that was doing the pulling wasn't dependant on friction with the ground, and it would be able to pull the glider off the treadmill.
All a treadmilll would do is make the wheels of the plane spin round a lot faster.