Thursday, December 14, 2006

M'er F'n Planes

All my physicist friends are unavailable. Can someone please answer the question in this scenario so everyone at my office gets back to work?

A plane is standing on a runway that can move (some sort of band conveyer). The plane moves in one direction, while the conveyer moves in the opposite direction. This conveyer has a control system that tracks the plane speed and tunes the speed of the conveyer to be exactly the same (but in the opposite direction). Can the plane take off?



Anonymous Jim said...

It's not going anywhere. The treadmill will always push it back.

10:58 PM  
Anonymous jeremy said...

It's flying, baby!

9:02 AM  
Blogger laughjon said...

The plane's jet fuel would ignited sending it off course and directly into le maison de Baronry over looking the Dead Sea. Engulfed in flames the Baronry's pathetic last words would be, "It flies."

Ironically it would still be undetermined if the plane flew or not.

9:29 AM  
Blogger Baron von Excellent said...

Well, the joke is on you Sir, for my Dead Sea estate is currently undergoing through an exhaustive restoration.
For the time being I can be reached at my winter residence on the island of Malta preparing for next weekend's falconry competition.

4:39 PM  
Blogger mts said...

What is the wind speed on the wings? If the wind is passing across the wings at "lift" speed, then the thing can take off, irrespective of how fast its wheels, or a conveyor, are going. If the air is dead, you can taxi on the conveyor till your heart's delight, and no rise will occur. The plane can be parked perfectly still in a wind tunnel, and still can rise. Light aircraft has been damaged parked at the airport during wind storms for this exact reason. The plane was lifted off the ground at one end, and it flipped.

Now go get an A on your science report, young man.

12:01 AM  

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