ok, You have a treadmill, you have a remote control car, you set the treadmill on exactly the same speed as the car is going, and it will just sit there, with the wheels spinning at the desired speed.

 

Set the treadmill at the same speed, and take a matchbox car, and push it up the treadmill, you can push it up the treadmill, with the wheels spinning the same speed as the treadmill, because the force effected from your hand pushing the car will move it up the treadmill, similarly, the plane will move forward from the force of the thrust from the engine, so it will be able to take off.

 

As I said

 

 

ALSO as this guy said.

Yeah, what Rolla__Boy said. I forgot about your earlier statement. Sorry dude.

Tis cool, I am here to remind :)

 

I had this same discussion with my mate on msn, and he was saying tha same as redwarf and jamie, and then I thought, hmm why don't I just look it up and see what everyone else thought.

 

There is countless forums with the exact same discussions we just had on them too. haha

I didn't bother looking it up. I wanted to try and think it out by myself as much as I could. I'd like to think I did okay.

I didn't look it up until after I had made my decision, and that post I quoted a minute ago

Don't get me wrong, I'm not trying to accuse you of cheating. I could see that you too were working through it in your head.

Set the treadmill at the same speed, and take a matchbox car, and push it up the treadmill, you can push it up the treadmill, with the wheels spinning the same speed as the treadmill, because the force effected from your hand pushing the car will move it up the treadmill, similarly, the plane will move forward from the force of the thrust from the engine, so it will be able to take off.

in warwick's original hypothesis, it was stated that the treadmill/conveyor matches the speed of the wheels of the car/plane. so in this instance, the faster you move your arm to push the car, or the more thrust you apply to the plane, the faster the treadmill/conveyor moves, and the vehicle remains stationary

 

read the first post again, engineering feasabilites are assumed possible, so what drives the treadmill/conveyor and allows it to match speed is irrelevant

I'm off for a lie down and a couple of panadol.

Good God, just reading some of the stuff in here, Rob, that sounds like a mighty idea.

 

*brain freeze*

Are there any terrorists onboard the plane?

the faster you move your arm to push the car, or the more thrust you apply to the plane, the faster the treadmill/conveyor moves, and the vehicle remains stationary

 

correct uptill the last 2 words :lol:

 

your still thinking in car terms

 

the wheels allow a speed difference.

so you can move the plane back or forwards at varying speeds..... the wheels allow that.

 

as we are applying thrust, the plane moves forward.

 

you muat think of the thrust. thrust pushes something. to stop that object moving you have to apply an opposite force. in this instance there is no opposite force, as the rotation of the wheels allows a speed diffeerence between plane and the belt.

 

you have to stop thinking of the wheels as driving the plane, or even as wheels... they are bearings :)

 

oh, and there was terrorists. but i got them :)

oh, and there was terrorists. but i got them

Good one!

i only read the first post and the last page....

 

a plane relies on airspeed, not ground speed. airspeed is what creates lift.

i am so tempted to lock this thread, it's totally stupid

I see that most of you are starting to agree with my first post and all other posts, basicly stating that the thrust of the turbines will push the aircraft to take of speed, regadless of the speed of the conveyer.