38 replies to this topic

[ShLoNkY]

Heres the question:

If you put a Jet airplane on a giant treadmill that is moving backwards equal to the force of the Jet engines thrust (pushing the plane forwards), would the plane fly, just sit there or do something else. This occupied several people for hours at work.

HINT: While you are pondering this question, stare at the dancin donkieman in my sig, for he will guide you.

Edited by ShLoNkY, 08 February 2006 - 07:49 PM.

[Novahawk]

Got bored and decided to think about it.. which took me 20 seconds:

well you know its like this: if the treadmill was pushing the plane backwards with the smae force as the plane is moving forward.. they would stand still, for like a few seconds, and then one of the engines (either the treadmill's or the jets) which will result in the plane flying off in a dircetion depending on which engine broke.. if the planes then it will fly back wards, because the treadmill will just continue to go and if the engines on the jet break, then it will just push it off in the other direection with the same force the plane uses to take off.. so it'll be going like 300 mph backwards which should be fun lol.. and if the treadmill breaks first then the jet will just fly off.. think of it as like doing a burnout with a car...

Edited by Novahawk, 08 February 2006 - 07:58 PM.

[ShLoNkY]

This is assuming that the Jet and treadmill NEVER break.

[Novahawk]

omg.. come on man! i just went on this huge spiel on how they would break... wtf!!! lols.. ok then they would just stand in one place.. forever!! and then the people on the plane will complain because its taking them like 30 years to get from new york to washington d.c. and they'll complain and the aviation company will go bankrupt.. and oh my god the band is still playing!! they're still playing!! ahhhhhh!!!

[Sgt. Bojo]

17 is the correct answer

[ShLoNkY]

WRONG!!

[Sgt. Bojo]

purple?

[Billy Pumper]

ok first of all it wouldn't take off. this was a thread first started on TribalWar.com that went like 500pages and is i think in the "epic thread" category i can link it for you but i don't care that much. so sholky who at your work is a TW member? lol

[Sniprwulf]

lol yeah. wanting to fly planes and all, defly wouldnt fly. the physics are simple if you know what lift is. the air going underneath the wing goes faster than the top of the wing, creating lift. if the plane is stationary b/c of the treadmill, no lift is created. thanks physics, i hate yur guts.

[ShLoNkY]

It WOULD take off. The answer is quite simple. I didnt know where it came from thats interesting Billy.

[Billy Pumper]

it won't take off i will link it to you just give me a min to find it gah

where it originated
follow up thread

Edited by Billy Pumper, 08 February 2006 - 08:51 PM.

[Sgt. Bojo]

Now that that's settled... what came first, the chicken or the egg?!

[Billy Pumper]

i know you don't have time but the TW guys went insane trying to get to the bottom of this, there is some technically confusing sh*t in there lol graphs and sh*t


ask whoever asked you this if hes a member of TW. and if he says he is tell him LEGZ told him to go kill himself :)

Edited by Billy Pumper, 08 February 2006 - 08:59 PM.

[ShLoNkY]

Assuming the wheels of the plane are free-spinning. (which they are) The belt would accelerate the wheels of the plane. This would have nothing to do with the Mass of the plane itself. Force=MassXAcceleration. Accelerating the wheels does not accelerate the plane, therefore it would takeoff.

If there was no friction between the wheels and the axles of the plane, gravity would hold the plane stationary even if the belt of the treadmill (and wheels of the plane) were going fast as hell. Engaging the force of the engine of the plane would accelerate the mass and it would take off.

This question is fun and debateable because it depends on which way you interpret the question.

[Billy Pumper]

i agree and when i talk to my TW budies in RL i still swear on the bible and everything i have that it would take off (mainly to piss them off)




little secret i voted yes on that b*tch lo

[nachos18]

the jet will go backwards because it is on a "giant treadmill that is moving backwards "

EDIT
k that was dumb ---

anyways, i think that there are no treadmills that big, am i right?

Edited by nachos18, 08 February 2006 - 09:16 PM.

[Nagash]

It would stay on the treadmill and not take off. there is no wind going over the wings to cause lift therefore the plane's wheels will just spin on the treadmill and all the engines are doing is keeping the plane in the same area of the treadmill (ie. not moving backwards or forward)

Think about this when you either run or walk on a treadmill do you feel a breeze blowing in your face (unless the guy in front of you farted hehe ) No!

[Billy Pumper]

ok well this is what i tell my friends and it pisses them off



if its a giant treadmill it has a giant fan so yes wind is present lol

[monster]

THE PLANE WILL NOT TAKE OFF.


Planes don't fly because of speed meat heads. That's why a car can go 300+ mph and not take off.


Like they said... it's the lift under the wings that makes a plane fly. And when you are sitting still, there is absolutely no lift. Or like nagash said, there is absolutely no airflow at all.

[Yatzee_Squirrel]

take off not take off.....who gives a f*ck?