Quote:
Originally posted by XPLORx4:
Quote:
Originally posted by Mobycat:
[b]So someone answer this ignored comment:

If the engines are off, and if there was NO friction, and that conveyor belt moved, the plane shouldn't budge - it will just have rolling wheels.
That's a correct statement if you mean there's no friction in the wheel bearings. (You need friction between the tires and conveyor, otherwise the tires wouldn't start rolling).[/b]
Yes, in the wheel bearings.

So, if there is friction, the plane will roll backwards?

Can the plane match the force with its engines?

What if it can't do anything *beyond* matching it?
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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