Earth spinning

neodude said:
In reality, yes.

but in the confines of the question it would be impossible for the plane to move.

I'm happy to agree that the question is stupid and has no basis in reality. Failing that we'll just have to agree to disagree.
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You're being pedantic about semantics because somebody malformed a question, it's utterly pointless, in fact it's the most pointless thing I've seen all week.
 
Some posts in this thread just make me want to cry :(
There should be a compulsory physics test for every citizen every 15 years, and those who fail have to take lessons or they get sent to jail.
 
Greenboi said:
How would it be impossible for the plane to move? As stated in the article, the wheels on the plane are really only there to support the plane, theyre not attached to any kind of drive.. theyre free moving (Aside from slight friction within the bearing itself). Which means, when the engine is turned on and the pilot attempts to take off, he will, as the wheels have no affect on movement of the plane, the thrust from the engines does and therefore moves the plane, regardless of how fast the wheels / treadmil runs.

Have a proper read of that link that was posted.. it explains it a lot better than I can
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I have read it.

In order for a plane to move forward it's wheels must be moving yes?

So how can the plane move if the speed of it's wheels are constantly being matched?

Here's a website for you... Clicky

Get a grasp of Basic Realisation #2
 
Dano said:
You're being pedantic about semantics because somebody malformed a question, it's utterly pointless, in fact it's the most pointless thing I've seen all week.
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I agree entirely. It is utterly pointless. A stupid question with no basis in reality. Yet people are still arguing with me and telling me nothing can stop the plane from moving. I know that in this case that is untrue, hence why I argue back.
 
Dano said:
No, the wheels could be locked solid and the thrust from the engines could still produce enough power to move the plane forwards.
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So the 757 doing a full thrust engine test with it's wheel brakes on that I witnessed out of my window a little over an hour ago was being held still due to magic then?
 
GreatAuk said:
Some posts in this thread just make me want to cry :(
There should be a compulsory physics test for every citizen every 15 years, and those who fail have to take lessons or they get sent to jail.
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I've done A-level physics, some things no matter how many times they are explained in detail just dont seem right to people. It's the same with lots of people i know with different subjects. Heck even our teacher taught us things that he doesnt even believe are right, yet he knows logically they are.
 
neodude said:
I have read it.

In order for a plane to move forward it's wheels must be moving yes?

So how can the plane move if the speed of it's wheels are constantly being matched?
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Obviously havnt read it properly at all.

It plainly states in that article that the plane doesnt even need wheels. The plane could take off even if it was sat on the body of the plane with no wheels at all, as long as the thrust from the jets / props was enough to outweigh the friction caused by this.

The wheels on the plane have NO drive from an engine or anything else.

The brakes are there to cause FRICTION which helps slow the plane down when the wheels are on the ground.
 
Greenboi said:
Obviously havnt read it properly at all.
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I have.

Greenboi said:
It plainly states in that article that the plane doesnt even need wheels. The plane could take off even if it was sat on the body of the plane with no wheels at all, as long as the thrust from the jets / props was enough to outweigh the friction caused by this.
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It does plainly state that. But it is plainly wrong. At least for the majority of airliner sized planes. They can happily sit at full throttle with their wheel brakes on and not budge an inch. I can't imagine the situation would be helped by having them sat on the body of the plane.

Greenboi said:
The wheels on the plane have NO drive from an engine or anything else.
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Agreed.

Greenboi said:
The brakes are there to cause FRICTION which helps slow the plane down when the wheels are on the ground.
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I know
 
neodude said:
It does plainly state that. But it is plainly wrong. At least for the majority of airliner sized planes. They can happily sit at full throttle with their wheel brakes on and not budge an inch. I can't imagine the situation would be helped by having them sat on the body of the plane.
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But the treadmill is not stopping the plane, the wheels move freely - they are not powered or connected to a gear system like in a car.

Think of a matchbox toy car, you hold the toy car on a treadmill, the wheels spin but the car goes where your hand moves it. Forward or back etc... it doesn't matter how fast the treadmill goes (assuming an excellently made and lubbed matchbox car) you can still move the car forward and back at will.

Your hand in this case is the equivalent of the jet engines on a plane, they are independent to the wheels.
 
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