Skill's weekend teaser

This is a discussion on Skill's weekend teaser within the General Trading Chat forums, part of the Reception category; Originally Posted by TheBramble There have never been any such dial in any plane I have flown. Largely I imagine ...

View Poll Results: What will happen?
The plane will take off normally 25 40.32%
The plane will remain stationary 32 51.61%
The plane will run out of conveyor belt before it can take off 5 8.06%
Voters: 62. You may not vote on this poll

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Old Feb 22, 2009, 5:13pm   #171
 
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Quote:
Originally Posted by TheBramble View Post
There have never been any such dial in any plane I have flown. Largely I imagine because it would be completely irrelevant.

One of the dials I do keep an eye on though indicates airspeed which, believe it or not, correlates quite closely with groundspeed (plus or minus wind vector).
Groundspeed in that sense is completely different to the speed of a moving belt; that is not the plane's groundspeed, because the belt DOES NOT MOVE THE PLANE.

For pity's sake read searchlight's post, and then tell me how much of an idiot you are. In a woman's voice.
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Old Feb 22, 2009, 5:14pm   #172
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Originally Posted by searchlight View Post
But the assumption is false. While the conveyor does exert some modest backward force on the plane, that force is easily overcome by the thrust of the engines pulling the plane ahead...
Ahead of what? The conveyor on which it is situated and which we are told will always match the speed of the plane? It can never move ahead or behind it's initial starting point on the conveyor relative to any reference point in-line but external to the moving conveyor.
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Old Feb 22, 2009, 5:15pm   #173
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Quote:
Originally Posted by TheBramble View Post
There have never been any such dial in any plane I have flown. Largely I imagine because it would be completely irrelevant.

One of the dials I do keep an eye on though indicates airspeed which, believe it or not, correlates quite closely with groundspeed (plus or minus wind vector).
Precisely.

In this case, the speed at which the wheels are revolving is completely irrelevant to the airspeed or groundspeed.
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Old Feb 22, 2009, 5:15pm   #174
 
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Skill Leverage started this thread It Will Match The Speed Of The Wheels!!!!! Oh My God!!!!!!!

Last edited by Lightning McQueen; Feb 22, 2009 at 5:16pm. Reason: further abuse :)))
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Old Feb 22, 2009, 5:16pm   #175
 
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Originally Posted by TheBramble View Post
Ahead of what? The conveyor on which it is situated and which we are told will always match the speed of the plane? It can never move ahead or behind it's initial starting point on the conveyor relative to any reference point in-line but external to the moving conveyor.
READ WHAT IS IN FRONT OF YOU FOR GOD'S SAKE. The conveyor belt's speed is irrelevant. It is this that you cannot get into your pea head.

You have lost. End of story. You are the weakest link, etc.
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Old Feb 22, 2009, 5:19pm   #176
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Originally Posted by TheBramble View Post
Ahead of what?
Ahead of the air.


Quote:
Originally Posted by TheBramble View Post
It can never move ahead or behind it's initial starting point on the conveyor relative to any reference point in-line but external to the moving conveyor.
No. It can move relative to the air (and to the ground).
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Old Feb 22, 2009, 5:21pm   #177
 
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Skill Leverage started this thread Please God, let him smack his forehead the gym shuts in a few hours...
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Old Feb 22, 2009, 5:26pm   #178
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You need to understand that it doesn't matter how fast the conveyor belt is going it does not have any effect on the speed or position of the plane.

Imagine the conveyor is made from something really really slippery. A hundred times more slippery than ice. Then when you turn on the conveyor it just slips under the plane and the plane stays exactly where it is. It doesn't matter how fast the conveyor goes or in what direction it is just so slippy that the plane stays still.

This is the situation we have here except the conveyor doesn't slip against the wheels it is the wheels slipping against the plane because they are not attatched to anything that drives the plane, just a slippery axle that the wheels spin around.

So now, when the pilot turns on teh engines the plane moves forward with the same groundspeed (compared to the ground under the conveyor belt) that it would even if there was no conveyor belt there because the conveyor makes no difference.
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Thanks! The following members like this post: Skill Leverage
Old Feb 22, 2009, 5:28pm   #179
 
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Skill Leverage started this thread See, Aspire got it wrong at first, and after ONE POST of explanation, he got it, and now he has given a really great analogy of the situation.

Therefore, it's not our logic, or our explanation of it that's at fault; it's you Bramble.
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Old Feb 22, 2009, 5:31pm   #180
 
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Ah!! Aren't Sunday's fun again with dear old Tony (Bramble) back stirring the porridge

Thank you all for keeping it civilised

cheers

jon
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