View Single Post
Old 03-03-2006, 05:39 PM
Paradoxic Paradoxic is offline
Join Date: Mar 2006
Posts: 7
Friction is Our Friend

Originally Posted by Ethilrist
Congratulations, you've jumped straight to BR #2: If the conveyor belt exerts backward force via friction et al. on the axles of the jet plane equal to the thrust generated by the jet engines, the plane will not move, and thus not take off.
And the friction can evidence itself in terms of HEAT. It's to be expected that you'd have some really hot wheels by doing this, heat dissipated into the atmosphere.

To put it simply: In this closed system, if we've got a turbine-driven conveyor system, such as the turbines used to drive the aircraft, and if this conveyor system uses the same force as the aircraft engines, then this force has to go somewhere.

Friction is not as trivial as most people make it out to be.