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A question of physics.....

a simple little question, or is it?

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WolstonFlyer12/10/2016 21:06:43
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This simple little question has caused a lot of healthy discussion on Facebook today.

747.jpg

 

Edited By WolstonFlyer on 12/10/2016 21:07:49

Phil Cooke12/10/2016 21:11:50
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It really doesn't matter how fast the wheels go round, no forward motion of the airframe = no aerodynamic lift = no take off.

Gary Manuel12/10/2016 21:12:31
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Yes - as long as the conveyor is long enough.

The 747 is driven forwards by the jet engines, not the wheels.

The wheels / conveyor might be turning, but that is irrelevant.

WolstonFlyer12/10/2016 21:16:04
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Not according to about 80% of the people in the Facebook group where this was first posted.

Edited By WolstonFlyer on 12/10/2016 21:16:26

Martin Harris12/10/2016 21:17:24
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Of course - what counter arguments have been raised?

Gary Manuel12/10/2016 21:18:01
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Does that answer the question or say something about facebook users?

WolstonFlyer12/10/2016 21:20:32
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You have to make your mind up.

Can the plane take off based on the question.

Dave Hopkin12/10/2016 21:20:49
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This is a classic loaded Question because it presumes you will assume the engines are running because it talks about the speed of the wheels.... of course if the jets were running at full power it would take off because the motion is provided by jet thrust so the fact its sitting on a conveyor belt is irrelevant BUT nothing is said in the scenario stated to say that the engines are running at all, therefore in that situation the wheels would not be turning, the conveyor belt would not be moving (ie matching the speed of the wheels) and the 747 would remain motionless

Tim Hooper12/10/2016 21:21:53
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The question doesn't state whether the engines are running or not.

If yes, then I'll agree with Gary.

tim

Gary Manuel12/10/2016 21:22:17
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If it's a wordplay game, then it can't take of while it's SITTING on the runway (edit - conveyor).

Edited By Gary Manuel on 12/10/2016 21:22:53

Gary Manuel12/10/2016 21:23:46
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Nor can it take off if I'm just Imagining it sat there!

WolstonFlyer12/10/2016 21:24:39
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As far as I know it is a normal aeroplane, fully working.

john stones 112/10/2016 21:25:16
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What's facebook ?

Flyer12/10/2016 21:26:44
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The question is.... Can the plane take off???......... not is it. The plane can always take off, regardless. Whether it choses too is another question.

Think I'll get back to my winter build............. cheeky

WolstonFlyer12/10/2016 21:26:50
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Posted by john stones 1 on 12/10/2016 21:25:16:

What's facebook ?

A really strange part of the internet.

WolstonFlyer12/10/2016 21:28:29
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Can the plane take off if the converyor belt is always moving the same speed as the wheels but in the opposite direction.

Flyer12/10/2016 21:30:46
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You need a winter build project Mr Wolston................. disgust

WolstonFlyer12/10/2016 21:32:14
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Posted by Flyer on 12/10/2016 21:30:46:

You need a winter build project Mr Wolston................. disgust

I need to finish some of the models that I have started yes

john stones 112/10/2016 21:32:16
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No

WolstonFlyer12/10/2016 21:32:56
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Posted by john stones 1 on 12/10/2016 21:32:16:

No

Ahh, the first 'No' answer.

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