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Originally Posted by Tomkat
This isn't the same, as the plane is moving around here so therefore has airflow.
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No - it IS the same.
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This is similar. The plane wouldn't take off. If it could, then why do we have runways at airports? Surely we could just mount all the aircraft on bricks and have them take off from stationary positions? The plane needs the air to move under its wings.
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Because in Idimmu's analogy the plane is still moving as well - it's just taking more energy to move it.