conveyor belt and plane answered at last ??

[doitall]

The wheels are in contact with the belt they will turn at the same speed as the belt plus any forward movement.

If you wish to by-pass the question then fine , there's no point in wasting more time.

 

[joe-90]

I've posted the real question - the one everyone is answering. Take your flawed question and stick it somewhere.

 

[securespark]

The wheels are in contact with the belt they will turn at the same speed as the belt plus any forward movement.

Who cares what the wheels do?

The plane will still take off!

Read this:

http://blog.xkcd.com/2008/09/09/the-goddamn-airplane-on-the-goddamn-treadmill/

 

[doitall]

I don't need to read that, it's a different question.

 

[doitall]

I've posted the real question - the one everyone is answering. Take your flawed question and stick it somewhere.

Think Joes lost the plot again.

 

[securespark]

I don't need to read that, it's a different question.

Can you explain why?

 

[joe-90]

This is the question.

"A plane is standing on a large treadmill or conveyor belt. The plane moves in one direction, while the conveyor moves in the opposite direction. This conveyor has a control system that tracks the plane speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction). Can the plane take off?"

 

[securespark]

This is the question.

"A plane is standing on a large treadmill or conveyor belt. The plane moves in one direction, while the conveyor moves in the opposite direction. This conveyor has a control system that tracks the plane speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction). Can the plane take off?"

Imagine a 747 is sitting on a conveyor belt, as wide and long as a runway. The conveyor belt is designed to exactly match the speed of the wheels, moving in the opposite direction. Can the plane take off?

It's essentially the same, no?

 

[joe-90]

Yes and yes. Doitall is just being a knob.

 

[securespark]

DIA

Can you confirm the question you are basing your answer on is essentially the same as the one posed in my latest link?

 

[Monkeh]

It never ceases to amaze me that this 'problem' can reach 24 pages of argument.

 

[securespark]

Each side is adamant the other is misunderstanding the physics!

 

[joe-90]

Not in this case. Doitall has posted a duff question - and won't let it drop.

 

[Mw Roofline]

I don't need to read that, it's a different question.

I thought the question was ""Will it take off?"

 

[doitall]

This is the question.

"A plane is standing on a large treadmill or conveyor belt. The plane moves in one direction, while the conveyor moves in the opposite direction. This conveyor has a control system that tracks the plane speed and tunes the speed of the conveyor to be exactly the same (but in the opposite direction). Can the plane take off?"

Imagine a 747 is sitting on a conveyor belt, as wide and long as a runway. The conveyor belt is designed to exactly match the speed of the wheels, moving in the opposite direction. Can the plane take off?

It's essentially the same, no?

Securesparks,

In the above post you have the two examples, in joes post the plane will take off in yours it will not, without breaking the rules in the post.

How many times do I need to say it.

It's impossible to match the speed of the wheels with the conveyor belt, it both the plane and belt are moving.

And I didn't post the thread this time or the times before. Joe.