and it is pissing me the hell off, cause nobody will PM me the answer :p

OMG stop posting so damn much! Relax bro! just readin through all that makes me not care nemore! LoL... and yes the jet could take offthe tires would just be going extremely fast...

sept idk if springs also ment that the conveyor belt would keep speeding up countering the speed the engines created...if so, then no...

damnit now i am thinking about it agian and i am even more confussed than before, hahaah

until i see the "ANSWER" my theory is correct and accurate.
My debate is...the plane needs to actually be going though the air at x MPH. in order for the wing flaps to help LIFT the plane off the ground.I cant see a STILL plane lifting from a conveyor belt with no airspeed.....

i give up.

ya..he did say that the belt would go faster if the planes wheels went faster...resulting in a still plane going no where......
damnit...lol

Springstand PM me the answer.

hockeyplayer has been on the money since the beginning

just because the wheels are moving faster, doesnt slow the plane down

Here's an analogy

you have a regular engine car, you put it on firctionless ice, you put it FULL THROTTLE into reverse, it wont go anywhere, put a rocket on the top of the car, it will still go foward regardless of whatever the tires are doing

springs u should be banned for making this thread and for that analogy

ok i get it. I just thought the conveyor belt would go just as fast as the wheels..because if the rocket makes the car go faster..the belt would know cause the wheels would spin faster resulting in the belt to adjust its speed to the cars speed.......lol nevermind. i quit.

You guys are right that a plane needs forward motion to take off, and if it where held in place somehow it could never get off the ground.

The trick is, the plane doesnt use its wheels to gain speed like a car. The wheels are free turning. The forward thrust comes from the jet's engines. The answer is: the plane will take off like normal, except that the wheels will be turning twice as fast.

Yes the wheels and conveyor belt would add some impeding friction. And if the engines were off, the plane would move with the conveyor belt. But that force from friction is extremely small compared to the force of the jet engine, and does not scale at all with the speed of the plane. The fact that the conveyor belt would increase its speed would do nothing except spin the wheels faster.

The plane would lift off inside the hanger. Groundspeed(as represented by the belt) is unimportant to the plane, which responds only to it's speed through the air.

The conveyor can only move if the plane moves(both relative to a fixed point on the ground beside the conveyor).

The conveyor can only move at the same speed as the plane,but in the opposite direction.

When the plane reaches liftoff speed the conveyor will be moving the same speed in the opposite direction.

The wheels of the plane will see twice that speed(plane+conveyor) but the relatively weak force of the added friction of the wheels will not greatly affect the acceleration of the aircraft and it will lift off in a normal manner and distance.

To help you understand, replace the wheels of the plane with a hovercraft skirt and air system. When powered up the friction between the plane and belt would be zero no matter how fast the belt moved. You would see that the plane would have no impediment to reaching flight speed. Put the wheels back on and the friction would be 4 times the normal amount(but still insignifigent to the power of the plane) due to the square law(double the speed(plane speed+belt speed)=2 times2 or 4 times the friction).

it says the plane is sitting on the runway. when its sittin it aint goin nowhere. i win

it also says that the palne MOVES in 1 direction and the conveyor in the other... so the plane is in fact moving... of coarse it'll fly...

Damn, I was at MPH a while ago and I'm teasing those guys who are trying to figure this out, and then I came here and realized the answer was posted here.:D

Yer all dumb, ok?
this whole wheel speed thing all that.

It is wind that causes the lift, the speed of the wheels or the conveyer are irrellevant.

You can have a plane traveling 1000 miles an hour, if it is going the same speed and direction as the wind it will drop like a rock.

Forget the conveyer belt, it would do nothing.

however, if you have a fan capable of generating enough wind force, you can put that on a plane that is stationary and it WILL take off.

This is a trick question. Scientifically NO, you put a plane on a conveyer belt it will not take off, wind is required. It doesent matter the speed of the wheels or the speed of the conveyer if they cancel it out, the fact is the plane is not movine, and it is now wheel speed but movement that it requires to get enough lift to take off.

However, im sure springstang will enlighten us all with the answer to a trick question. Then were all gonna sit around and say "oh yah, thats right, i read it 50 freakin times and didnt read it the "correct" way.

However, scientifically, NO, there is no mention of any wind generating machine. A wind machine CAN make planes lift off the ground without any forward movement.

go back and read the question...

it clearly states that the plane IS MOVING in one direction and the CONVEYOR (which is the entire runway, big ass conveyer) is moving the other way...

Now we have a plane heading east and the conveyor west... the whells spin independent and move 2x faster than if the the coneyor wasnt there...

my answers were right from what he said

http://x12.putfile.com/11/32612520769.jpg

really who cares about some stupid plane?

its not a trick question, the plane will take off plain and simple, its physics, slappy you suck at life

the purpose was to have you focused on wheel speed, which doesnt matter

Yup, you were, but I don't see how MattJ is right? Lift is relative to pressure differences, I know he talked about ground speed, but the plane won't lift unless the airflow under the wing is fast enough to create the pressure needed to lift the plane, so if the plane is sitting in a hanger it (as in no forward motion) it wouldn't lift off...

However, the way Springs worded the question is to ambiguous, If the plane is able to move forward then of course it will eventually gain enough wind speed over the wings to lift off, if it's in a hanger on a dyno thing then now...but why would you even do something like that the engines would break loose and shoot outa the hanger LoL...

Of course it is a trick question, the question was designed in order to mislead the reader into focusing thier attention on something else.. So yeah, dumbass, it is a trick question. ;)

to make another anaology, magic tricks are deception, they mislead you into focusing on the wrong thing, that is why they are called Magic Tricks, instead of Magic.

your mom does magc tricks in my pants

Yeah, she makes yer jimmy look biger than a thimble. Not even david copperfield could pull that one off.

That was a good one though dude.

yeah, ud know about that wouldnt ya :D

Yeah dude, she got home and was just DYING of laughter, it took her 20 min to catch her breath enough to spread the story. <rofl>

But she wasnt just making fun of ya, she actually feels real real real bad for ya.
:D

meh she told me that when she gives you head, she has to hold in the laughter?





rofl this is so stupid and pointless

You know the thread has dried up when it goes to mama jokes. <rofl>

I understand how the plane will take off. But question, will the plane go the same distance on the conveyor belt when taking off as it would on a normal runway?