Quote:
Originally Posted by sureLoss
I think a better analogy is flying a kite.
When you were a kid flying a kite in the park, you had to run(fast) to get the kite to fly up in the air. However imagine trying to get that kite up in the air while running on a treadmill.
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Well the analogy is flawed for two reasons.. first the kite flies because the airspeed is high enough without the person moving (wind), and second the running only happens to get the kite up above the area close to the ground where the wind is slow up into the air where it's faster and more constant.
Plus the kid running is using friction with the ground (running) to provide the forward thrust. A better analogy would be a kid on a skateboard with a jet on it trying to launch a kite.