38 replies to this topic

[Billy Pumper]

you gave a f*ck when you voted on TW

[monster]

lol...

[Yatzee_Squirrel]

i didnt give a f*ck you just wanted me to vote the same thing that you did and i did not feel like arguing

[ShLoNkY]

The plane moves forward off the treadmill cuz all the treadmill does is spin the planes wheels. The treadmill does not negate the thrust of the planes engine. Therefore the treadmill doesnt do a goddamn thing but spin around. The plane moves forward, then the whole lift thing takes place. The physics behind what makes the plane fly have nothing to do with the question at hand. Dumbasses.

[TheCincinnatiKid]

"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"

you just cheated....you said the engines were being counter balenced by the speed of the treadmill.

meaning the plane would not move forward but it would just spin its wheels.

also meaning the plane would not take off because of there is no air movement above or below the wings to cause lift.

[monster]

"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"

you just cheated....you said the engines were being counter balenced by the speed of the treadmill.

meaning the plane would not move forward but it would just spin its wheels.

also meaning the plane would not take off because of there is no air movement above or below the wings to cause lift.

SHLONKY = PWNED!!!!!

[Cleric]

The plane moves forward off the treadmill cuz all the treadmill does is spin the planes wheels. The treadmill does not negate the thrust of the planes engine. Therefore the treadmill doesnt do a goddamn thing but spin around. The plane moves forward, then the whole lift thing takes place. The physics behind what makes the plane fly have nothing to do with the question at hand. Dumbasses.

As I am a Physics major I see a couple of problems with this.

A.) If you are talking about Forces only then the plane doesnt do sh*t because the friction force of the wheels touching the ground is equal to the force of thrust of the plane and the normal force of the ground is equal to the force of gravity.

B.) Now if you are talking about speeds and acceleration and not Forces then you are still wrong because you use speed to calculate acceleration and you use acceleration to calculate Force. In the equation of F = m * a then (m1 * a1) = (m2 * a2). The masses will cancel out becuase you are talking about one object the plane so you have two accelerations on 1 object which are equal to each other and will cancel each other out.

I.E. the plane will not move. If you really want i will draw you a Free Body Diagram of it.
And that is your answer

[ShLoNkY]

You are a dumbf*ck and over analyzing it like everyone else. A planes engine does not power the wheels, they spin freely. You can spin a planes wheels backwards and still move forwards. I made it clear that the wheels spin freely.

Drop a rollerskate on a treadmill. Notice that it takes a few seconds before it goes flying down the track as the friction between the wheels and axle overcome the gravity holding it down.

A plane could be traveling at 200 miles an hour and i could climb out the b*tch and spin the wheels backwards. It would not fall out of the sky.

SHLONKY= Wins at life

EVERYONE ELSE= PWNED

Edited by ShLoNkY, 08 February 2006 - 11:45 PM.

[Billy Pumper]

new question

could chuck norris take off of a treadmill with just one round house kick

[ShLoNkY]

new question

could chuck norris take off of a treadmill with just one round house kick

I f*ckIN HATE chuck norris. He sucks at everything. Thanks for hijacking my thread asshole......

[Sniprwulf]

monster and i are the only smart f*ckers here haha. and whoever else said it wouldn't take off. shlonky = stubborn b/c he's wrong. if you knew the first thing about airplanes you wouldn't have posted this in the first place. . THE ARIPLANE STAYS STILL B/C OF THE TREADMILL (lol that was funny cincinatti)< CREATES NO LIFT B/C NO AIRFLOW. END OF STORY.

[kid_latigo]

monster and i are the only smart f*ckers here haha. and whoever else said it wouldn't take off. shlonky = stubborn b/c he's wrong. if you knew the first thing about airplanes you wouldn't have posted this in the first place. . THE ARIPLANE STAYS STILL B/C OF THE TREADMILL (lol that was funny cincinatti)< CREATES NO LIFT B/C NO AIRFLOW. END OF STORY.

i agree, unless there is lots of wind, which would cause the plane to takeoff

[Billy Pumper]

sory shlonky back on topic lol i don't hink that it would not take off

[Frag0holic]

Seems to me like the plane would take off, unless there is something I'm missing... The only thing that would keep the plane in place is if the weight of the plane cancels out the force generated by the engines (in which case the plane would not take off on a normal runway either I.E. overloaded).
Just think about it. Put your hand into a rollerskate an place it on a moving treadmill. Is it so hard to believe that you could make it 'roll' against the direction of the treadmill? Sure, it puts a whole lot more strain on the wheels, but in this theoretical experiment the plane is indestructible. The plain would gain speed (though much slower than it would usually) and eventually have enough airflow to take off.
This is all thanks to a pretty cool invention called 'bearings'.
/PWND

[Ziros]

I'm going to explain once since none of you read the thread apparently:

The plane takes off because the wheels and treadmill do not affect the plane. A plane is NOT like an automobile on a treadmill. An automobile applies torque to its wheels to go forward. A plane uses propellers or a jet engine to generate thrust to go forward, and so the wheels FREESPIN while it goes forward. Since the treadmill is going backwards at the exact pace in an attempt to keep up with the plane's forward motion, the wheels end up FREESPINNING forwards at exactly 2X the rate they would've spun at any given speed. Eventually, the plane will reach the speed necessary to takeoff.

Thus, assuming the treadmill is long enough (runway length), THE PLANE WILL TAKE OFF JUST FINE.

[ShLoNkY]

Thank you Ziros and Frag. Everyone else sucks.

[Yatzee_Squirrel]

The Harrier will take off fine too.

i concur

harrier=pwnd

[ShLoNkY]

The Harrier will take off fine too.

If the question at hand had anything to do with a Harrier, I would have specified.

However the Harrier would probably have been f*cked. Assuming that the plane would roll forwards due to the friction of the axles of the wheels and the wheels themselves. The harrier would roll forwards as it was trying to take off vertically. Thus; causing it to takeoff sideways and rip the wings off in a firey crash as it was not designed to do so.

You suck at life. Thanks for the Donkey.

[ShLoNkY]

Harriers dont take off instantly, it takes awhile for them to fire up and take off. If you put one on a treadmill, it would probably be traveling forwards slowly before the jets made enough power to lift it. If youve seen a harrier takeoff vertically, they take off very slowly at first.

Either way, this thread is getting stupider. No thanks to shLoNkY of course. What are we going to place on a giant treadmill next??