Hypothetical Question
06-07-2006 | 06:10 AM
#51
Gets Weekends Off
Joined: Jul 2005
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From: EMB 170/175 F.O.
Originally Posted by Skygirl
Did anyone come up with a definitive answer to the topic of this thread? 
I'm convinced that the airplane will get off the ground. I was skeptical at first, but now I get it.
06-07-2006 | 09:07 AM
#53
Chief Jeppesen Updater
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From: Executive Transport Driver
I continue to believe that that plane will fly off of a conveyor belt since there is nothing keeping the plane from accellerating, but how about if we substituted wheels for floats and conveyor for river/water? Since there is more surface friction, would the plane fly?
06-07-2006 | 11:31 AM
#54
Gets Weekends Off
Joined: Jul 2005
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From: EMB 170/175 F.O.
Originally Posted by FlyerJosh
I continue to believe that that plane will fly off of a conveyor belt since there is nothing keeping the plane from accellerating, but how about if we substituted wheels for floats and conveyor for river/water? Since there is more surface friction, would the plane fly?
Yes. The conveyor is only activated if the airplane indicates airspeed, which means it must be moving forward to indicate speed. Otherwise, the conveyor never moves. All that has to happen is for the plane to indicate any airspeed at all, and it will eventually generate enough speed to takeoff.
06-07-2006 | 04:41 PM
#55
Guest
Posts: n/a
Originally Posted by TonyC
The question is not too vague, and it has only one answer.
Read the second sentence very carefully. I'll highlight the important words.
An airplane does not apply thrust through its wheels, so the conveyor is nothing more than a cute (and impossibly expensive) distraction. Airplane accelerates to 60 mph, the conveyor accelerates to 60 mph in the opposite direction. (The question as posed requires that the conveyor move at the same speed, but opposite direction, as the airplane. If the airplane is stationary, then the conveyor isn't moving either.) Wheels turn at 120 mph, and the airplane flies.
- Tony C
The truth only hurts if it should.
Read the second sentence very carefully. I'll highlight the important words.
An airplane does not apply thrust through its wheels, so the conveyor is nothing more than a cute (and impossibly expensive) distraction. Airplane accelerates to 60 mph, the conveyor accelerates to 60 mph in the opposite direction. (The question as posed requires that the conveyor move at the same speed, but opposite direction, as the airplane. If the airplane is stationary, then the conveyor isn't moving either.) Wheels turn at 120 mph, and the airplane flies.
- Tony C
The truth only hurts if it should.
That was genious....great job of thinking out of the box...but I'll give you another riddle....using this sentence: "how much wood would a woodchuck chuck if a woodchuck could chuck wood?" tell me what the hell a woodchuck is.
06-07-2006 | 06:53 PM
#56
Organizational Learning
Joined: Nov 2005
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From: Directly behind the combiner
Originally Posted by Flyingblind747
... tell me what the hell a woodchuck is.
Anything else?
.
06-07-2006 | 07:03 PM
#57
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Joined: Apr 2006
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Originally Posted by TonyC
A woodchuck is a marmot...
.
.
Never knew that. So keeping one "for domestic... Within the city limits... That's not legal, either, Dude..."
Edifying as always, sir...
06-08-2006 | 09:08 PM
#58
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From: Embry-Riddle wrecked me finincially and turned me into a bitter old S.*.B.
Originally Posted by mkrinn
Whose gonna leave the horse head in ERAU1978grad's bed tonight? I wanna help.
http://www.engadget.com/2004/09/17/t...e-head-pillow/
http://humor.about.com/gi/dynamic/of.../godfather.htm
06-08-2006 | 09:11 PM
#59
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From: Embry-Riddle wrecked me finincially and turned me into a bitter old S.*.B.
Tony C, FLyerJosh. Are you guys trying to run a smoke test on your brains?
This is Dynamics 101, freshman level engineering whether you are in electrical or civil or mechanical or aero or nuclear. Everyone takes Dynamics 101. Let's change the problem to read: "A dump truck is on a conveyor belt......." Same outcome. It won't fly either.
This is Dynamics 101, freshman level engineering whether you are in electrical or civil or mechanical or aero or nuclear. Everyone takes Dynamics 101. Let's change the problem to read: "A dump truck is on a conveyor belt......." Same outcome. It won't fly either.
Last edited by ERAU1978grad; 06-08-2006 at 09:20 PM.
06-09-2006 | 05:51 AM
#60
Organizational Learning
Joined: Nov 2005
Posts: 4,948
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From: Directly behind the combiner
What's wrong, Grad, did Michael boot you off FI for trolling, and now you don't have ten bucks to join up again?
I'll pitch in 50 cents.
.
I'll pitch in 50 cents.
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