All it proves is how irrelevant stuff like this that is taught in schools is, when it comes to actual practical applications of adult life

You have asked about a falling lift. That can be a real life one (which has friction and air resistance) and a theoretical one which falls down in vacuum w/o rails etc. Yes, these are two VERY different cases :pimp

First of all it was not me who asked.

Secondly, not those different things I was talking about.

You mentioned that it depend of whether it is frictioned (then you can jump) vs non frictioned (you can't).

Then you proceeded that it depends on height (this is the DIFFERENT thing from friction/non friction I was referring to).

So now I ask, does it depend on friction/non friction or on low height vs high height? << these are the 2 different things I was referring to.

puzzzles puzzles for all

Test the theory by jumping out of a moving car.


:1orglaugh:1orglaugh:1orglaugh

No it wont take off...

If you thought it would - FAIL.....

Sorry...

I respectfully decline being in agreeance on this one

Nothing is providing lift - What part of the plane on the treadmill is giving it any lift?..

The engines are making it go faster - It's still stationary on the treadmill - No LIFT!....

No lift no fly...

as long as the wind under the wings is a greater force than above, the plane can lift. Therefore, a 200mph wind would lift a plan off the ground even if it was stationary. If the plane is stationary and there´s no air flow created by the engines driving the plane forward it will not be able to fly.

Given this, as the jet engine pushes into the air, no matter what the ground, or runway, or treadmill is doing, the engines will be pushing the plane through the air anyway, so will take off, if the runway was long enough. The engines and wings would still need the same distance to take off!

The wheels can spin back or forward and are of no relevance to the plane, wing and engines.

I think that the plane would move forward as much or more than it normally would, personally
I didn't know that airplane wings could generate lift without forward movement
I guess pushing the air over the wings could generate lift but I think the air is pushed out behind the wings
Talking out of my ass as I am no expert though

Fiddy more silly 'problems' that have zero impact in actual everyday life :thumbsup:thumbsup:thumbsup