Answer this question...
VX Hatch with 431,500!
Joined: Sep 2005
Posts: 560
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From: Missouri
Originally Posted by Kestrel
That is the essence of the argument. The only thing holding the plane back is the rolling resistance drag from the wheels to the conveyor belt. As long as the engine is capable of generating enough thrust to push against the rolling resistance, the plane will accelerate.
The guy with the pilot friend needs to remind his friend that he is only a pilot and NOT an engineer! If he is an engineer, he's not a smart one. My dad IS an engineer and I argued with him for 30 minutes before I got him to agree with me. (I guess I'm the rocket scientist?)
The guy that said the tires would burn up is overanalyzing too. Even if you aren't overanalyzing, there are planes that take off well under 200mph and there are tires that are rated well over twice that. This is a really simple problem and the plane wont stay still. The problem is written to make you believe that it would. Did you read my examples with the rocket above? I think I explained really well why the plane would fly. I'm really disappointed in the people who think it won't.
For the THIRD TIME, I'll repaste the problem so you can read it...
"A plane is standing on 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 opposite direction).
The question is:
Will the plane take off or not? Will it be able to run up and take off?"
NOWHERE does the problem say that the plane will stay in one place! The problem asks you to decide if it will stay in one place!!
Once again... I'm very disapointed in the people who think the plane won't fly. And to think, you are the same guys I ask for help to fix my car. :slap:
pukimonster
Joined: Jun 2002
Posts: 9,967
Likes: 2
From: Milwaukee, WI
Originally Posted by DakarM
Umm you are over analyzing man. I know what the question is. You are assuming that the belt can't while when I read it, it is saying it will.
Insteads of using speed like you're doing use distance. as soon as the plane moves 1inch the belt will return the plane to it's original position. The belt system will continue to do so no matter how fast the plane tries to accelerate.
That is what the question is saying no?
Insteads of using speed like you're doing use distance. as soon as the plane moves 1inch the belt will return the plane to it's original position. The belt system will continue to do so no matter how fast the plane tries to accelerate.
That is what the question is saying no?
Originally Posted by brtecson
here's a way of explaining it:
put a hot wheels toy car on top of a large piece of paper. snatch the pull the piece of paper horizontally from under the hot wheels (swiftly)... The distance traveled of the hot wheels car is less than the distance traveled of the paper. If you pull it fast enough, the car might not move at all. Why? Because the car isn't attached to the paper. The cars tendency to move with the paper is caused by the resistance coefficient in the wheels at whatever speed the paper is pulled.
So yes, the airplane would accelerate and lift off, but at a lesser rate due to the resistance in the wheel bearings of the airplane.
put a hot wheels toy car on top of a large piece of paper. snatch the pull the piece of paper horizontally from under the hot wheels (swiftly)... The distance traveled of the hot wheels car is less than the distance traveled of the paper. If you pull it fast enough, the car might not move at all. Why? Because the car isn't attached to the paper. The cars tendency to move with the paper is caused by the resistance coefficient in the wheels at whatever speed the paper is pulled.
So yes, the airplane would accelerate and lift off, but at a lesser rate due to the resistance in the wheel bearings of the airplane.
Senior Member
Joined: Jun 2004
Posts: 30,331
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From: Montréal, Canada
ok so:
kestrel says it would take off.
stupid noob says it will take off
I just dont understand how the plane will generate enought lift. lift is created by the movement of the air on the wing right? however on a belt the air speed in zero(or just a bout cause of wind) the plane is not actually movin thru the air so no lift created by the wings so it wont take off?!? unless the gient fan is added in!
kestrel says it would take off.
stupid noob says it will take off
I just dont understand how the plane will generate enought lift. lift is created by the movement of the air on the wing right? however on a belt the air speed in zero(or just a bout cause of wind) the plane is not actually movin thru the air so no lift created by the wings so it wont take off?!? unless the gient fan is added in!
|:]
Joined: Aug 2004
Posts: 14,182
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Originally Posted by Kestrel
That is the essence of the argument. The only thing holding the plane back is the rolling resistance drag from the wheels to the conveyor belt. As long as the engine is capable of generating enough thrust to push against the rolling resistance, the plane will accelerate.
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 opposite direction).
after reading that tell me how ur thing makes sense...the belt tunes its speed to the plane even if it does increase thift. apparently ur NOT reading wat i said before
Senior Member
Joined: Jun 2004
Posts: 30,331
Likes: 0
From: Montréal, Canada
Originally Posted by [Damnit]
ohmyfuckinggodandurguys'egos!
Pic Whore
Joined: Jul 2004
Posts: 22,224
Likes: 1
From: NJ
Originally Posted by [Damnit]
go back and read the freakin question, kthx here il put it here for u
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 opposite direction).
after reading that tell me how ur thing makes sense...the belt tunes its speed to the plane even if it does increase thift. apparently ur NOT reading wat i said before
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 opposite direction).
after reading that tell me how ur thing makes sense...the belt tunes its speed to the plane even if it does increase thift. apparently ur NOT reading wat i said before