Quote:
Originally posted by porsche996:
Quote:
Originally posted by Mobycat:
[b]They aren't the same craft. You really can't compare them.

Again...if the plane is standing still (it is, if the conveyor is moving), then there is NO wind to give the wings lift. The wings MUST have lift to get the plane off the ground.
If the plane is standing still, then the conveyor belt isn't moving, and it may as well be a parking lot.

Moby, what part of the plane has to move in order for the plane to be moving?

For your arguement to work, you would have to say the tires. But the tires on a commercial airliner are tucked up under the body, so does the plane not move, then, if the tires aren't rotating?[/b]
No, not the tires.

Assuming calm air, that means the plane has to move in relation to the air...and the ground (since it's calm). That ain't gonna happen.

Put a windsock on the tip of the wing. Start the experiment. That sock is not going to flutter at ALL. If it's not fluttering, there is no wind to provide lift for the plane.
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"Nature has constituted utility to man the standard and test of virtue. Men living in different countries, under different circumstances, different habits and regimens, may have different utilities; the same act, therefore, may be useful and consequently virtuous in one country which is injurious and vicious in another differently circumstanced" - Thomas Jefferson, moral relativist