The conveyor belt thread.

[burning blue soul]

flight relies on 4 principles
1. weight
2. drag
3. lift
4. thrust

in this scenario the air craft is not moving at all. the ground is moving at 180mph against the thrust of the 180mph engines.

there would be no lift generated by the air speed that taking off relies upon.

therefore the plane would not take off.

The ground or the conveyor belt?

What does the thrust react against?

What is the speed of the air relative to the ground?

As an aside aircraft tyres are normally rated to 225 mph which may cause problems in this relativity exercise ;-)

dont get pedantic or this is going to end in threats of violence ! ;)

 

[blueincy]

The plane would definitely take off as the thrust forward comes from the engines and not from the wheels. The engines and wings are travelling at 180mph (or whatever) which enables take off.

All that the conveyor belt does is increase the speed of the wheels going around so that as the plane reaches 180mph the wheels are doing 360mph.

The plane does not rely on the wheels for forward thrust so therefore takes off

Bernoulli's Principle.


[video]http://www.youtube.com/watch?v=8vqMotb6m3c[/video]

 

[ColinBellsjockstrap]

flight relies on 4 principles
1. weight
2. drag
3. lift
4. thrust

in this scenario the air craft is not moving at all. the ground is moving at 180mph against the thrust of the 180mph engines.

there would be no lift generated by the air speed that taking off relies upon.

therefore the plane would not take off.

The ground or the conveyor belt?

What does the thrust react against?

What is the speed of the air relative to the ground?

As an aside aircraft tyres are normally rated to 225 mph which may cause problems in this relativity exercise ;-)

dont get pedantic or this is going to end in threats of violence ! ;)

Calm down! Calm down!

 

[I'm With Stupid]

[video]http://www.youtube.com/watch?v=bEyfHwDdXSg[/video]

 

[Stuuuuuu]

I can see this coming to virtual blows in a minute.

 

[blueincy]

 

[Mustard Dave]

Anybody who thinks the plane would not take off is as thick as fucking mince. The plane is propelled by its engines which push it through the air - not against the ground. The plane will still move - the only difference is the wheels will be rotating at twice their normal speed.

 

[Kippax.]

flight relies on 4 principles
1. weight
2. drag
3. lift
4. thrust

in this scenario the air craft is not moving at all. the ground is moving at 180mph against the thrust of the 180mph engines.

there would be no lift generated by the air speed that taking off relies upon.

therefore the plane would not take off.

what if a GIANT fan was blowing at the plane

 

[I'm With Stupid]

Anybody who thinks the plane would not take off is as thick as fucking mince.

Not really. It's a pretty counter-intuitive and often badly-worded puzzle.

 

[burning blue soul]

flight relies on 4 principles
1. weight
2. drag
3. lift
4. thrust

in this scenario the air craft is not moving at all. the ground is moving at 180mph against the thrust of the 180mph engines.

there would be no lift generated by the air speed that taking off relies upon.

therefore the plane would not take off.

what if a GIANT fan was blowing at the plane

now you are adding unquantified variables to this already contentious issue, which may lead to threats of violence.