It isn't actually. The myth is that the treadmill is moving backwards at the same speed as the plane is moving forwards through the air (plane's movement is measured relative to the air.) Once the plane reaches the right airspeed, it can take off, no matter what the ground is doing beneath it.
Did you notice that the plane hit the end of treadmill? maybe if there was more space for the plane it would take off? you could see it gain speed over the treadmill, thus if more space would equal the take off?
Mudchair, the myth says the treadmill is going the opposite direction as the plane, Do you think there is one person in this world that would believe a non powered plane will magically move forward and take off when on a treadmill moving backwards?
You are the one confused, maybe watch some more videos on the subject and you will understand better.
you're an idiot. The treadmill is going to exert no force at all on the plane, it's just going to spin its wheels. Causing it's wheels to spin does not at all mean that it is actually putting backwards force on the plane. You're an engineering student? I'm an engineering student at Duke, punk.
And actually the math comes out to: 3mph - -3mph = 6mph (the wheels will spin at 6mph), the plane moves forward at 3mph (relative to the objects not on the conveyor, and the conveyor moves at -3mp relative to the objects not on the conveyor. Georgia Tech, son.
dude the point of the problem is that the plane speeds up equally to the treadmill and thus there is no relative motion to the outside world. There would be no air moving across the wings to create lift you fuck head.
There is no need for personal insults. I'm sorry you can't understand the concept of plane engines and airspeed. There would be relative motion to the "outside world" or more accurately put, air. A plane engine pulls against air, so what speed the treadmill goes does not matter. The only friction that occurs is in the wheel bearings of the landing gear, and it is overcome all the time by planes around the world. Spinning twice as fast doesn't create any significantly new friction.
The treadmill DOES matter though. The wheels are required for a ground takeoff. Jet engines may use air as a form or propulsion, but the wheels allow the plane to roll across the ground. If the treadmill matches the wheel speed no rolling occurs. No rolling = no forward movement = no takeoff. This is why we have harriers and helicopters, and why aircraft carriers use a catapult system.
The treadmill doesn't match the wheel speed, that creates a physics cunundrum. The scenario is that the treadmill speed inversely matches the forward motion of the plane.
Apparently what you people aren't understanding here is what the purpose of wheels on an airplane is. All wheels do is prevent friction with the ground to the greatest extent possible. That is, they allow the airplane sitting on the wheels to act completely independently from the ground below.
Think of it this way. If the plane approached to land at 150 knots and the treadmill was spinning the opposite direction at 150 knots, would the plane instantly stop moving when it touches down, or would the wheels just have to spin a lot faster than normal (300 knots) while the plane rolls down the runway? Come on people, think...this isn't as hard as you're making it.
Ok picture a float plane taking off in a river. Now picture that the river matches the speed of the plane by flowing against its forward progess, the plane would not move it would stay stationary and not take off.
How much friction is there between a float and a river? How far down do you think a float sinks into the water? Do you know how much drag that is? Now compare it to a plane on the ground with wheels. The plane still would move forward in the river but not nearly as easily as the one on the treadmill. It's all about the friction...or lack thereof.
but either way the treadmill would speed up proportional to the speed of the plane so stil...
If you put a plane and just sit it on the treadmill, turn on the treadmill, it would still move backwards until you had thrust to balance that motion. From there the treadmill would still speed up proportional to the planes speed so it still wouldn't move.
Search youtube. There's a video of somebody doing this and showing how stupid you are. It's a video of a guy with his little kid. His little kid understands better than you do and he's like 3 years old.
If the frictional force of the river to the floats is the same or greater than the force of the thrust then the plane will remain still or continue to flow backwards. The plane must overcome the frictional force of the water the same as it would have to overcome the frictional force of the bearings in the wheels. The "speed" of the river would still not matter, it's the "frictional force" that must be overcome by the plane.
I can not believe that people think it wouldn't take off. Stupid, un-educated clowns.
The funny part is that they are so certain that it wont. haha the plane gets momentum from the air flowing past it. It would take off completely normally in the same distance but the wheels on the ground would be roating at a crazy speed.
What are you? Fucking retarded? How many planes do you know take off without wheels, which is the WHOLE POINT of the experiment. The treadmill is going to spin the WHEELS backwards while the thrust from the prop moves the plane forward to rotation speed, ass.
the way airplanes fly is the wings create a high pressure zone beneathe them by slowing that air down and a lover pressure zone above the wings by speeding up that air. the high pressure makes it so that the aircraft is able to lift up into the air. it all depends on the shape of the wing. no speed, or air= no flight
the treadmill is not automatically adjusting its speed to the planes new speed. omg you are such a moron. i'm an engineering student i know what im talking about here.
Well engineering student, you must've failed physics. The aircraft's thrust has nada to do with the treadmill/wheels. The force imparted via the treadmill to the wheels is NOT enough to stop the aircraft from accelerating and rotating.
It isn't actually. The myth is that the treadmill is moving backwards at the same speed as the plane is moving forwards through the air (plane's movement is measured relative to the air.) Once the plane reaches the right airspeed, it can take off, no matter what the ground is doing beneath it.
petem1989 3 years ago 3
i think its just a joke...pretty funny though, totally snapped us out of our 4 hour argument on the problem =D
FU0C0 3 years ago
you're doing it wrong
hamsterpoop 3 years ago
Did you notice that the plane hit the end of treadmill? maybe if there was more space for the plane it would take off? you could see it gain speed over the treadmill, thus if more space would equal the take off?
JordaNeale 4 years ago
xD funny video rotfl
what's the name of the song? xD
blaaat1 4 years ago
Good stuff! LOL
I think a lot of people have missed the humour in this video.
peanutbutterjellytme 4 years ago
Wow people are so stupid.
The whole myth with this treadmill crap is will the plane take off on a treadmill without its OWN thrust.
With its own thrust OF COURSE it's going to take off on a treadmill. How can people be so retarded..?
Oh and don't reply to me saying 'ohh u r teh dumb, t3h plane just goes off course and hits teh side of da tredmillz'
mudchair16 4 years ago
Mudchair, the myth says the treadmill is going the opposite direction as the plane, Do you think there is one person in this world that would believe a non powered plane will magically move forward and take off when on a treadmill moving backwards?
You are the one confused, maybe watch some more videos on the subject and you will understand better.
mitchio83 3 years ago
Well, thats solves everything.
swatcameintohouse 4 years ago
Well thats helpful...
cruddiestcrudever 4 years ago
you idiot, a plane has a jet engine, not a motor drive.
xJasenx 4 years ago
no
the jet engines make 3mph of thrust forward, and the treadmill goes -3mph backwards
3mph - 3mph = 0
are you stupid?
penilesecretions 4 years ago
you're an idiot. The treadmill is going to exert no force at all on the plane, it's just going to spin its wheels. Causing it's wheels to spin does not at all mean that it is actually putting backwards force on the plane. You're an engineering student? I'm an engineering student at Duke, punk.
mactackle52 4 years ago
ohio state, son.
3-3=0
penilesecretions 4 years ago
Your doing it wrong.
3mph air speed - 3mph ground speed = 3mph air speed and -3 mph ground speed.
Learn the difference between ground and air speed. The jets use air as their medium, not the ground.
unklejman 4 years ago 3
Blah blah blah, relative to the air its speed is ZERO, NO LIFT.
Spayne007 4 years ago
You saw it move, so relative to the air its speed isn't zero. Are you blind?
Protonpack 4 years ago
And actually the math comes out to: 3mph - -3mph = 6mph (the wheels will spin at 6mph), the plane moves forward at 3mph (relative to the objects not on the conveyor, and the conveyor moves at -3mp relative to the objects not on the conveyor. Georgia Tech, son.
robert0380 4 years ago 3
dude the point of the problem is that the plane speeds up equally to the treadmill and thus there is no relative motion to the outside world. There would be no air moving across the wings to create lift you fuck head.
Spayne007 4 years ago
There is no need for personal insults. I'm sorry you can't understand the concept of plane engines and airspeed. There would be relative motion to the "outside world" or more accurately put, air. A plane engine pulls against air, so what speed the treadmill goes does not matter. The only friction that occurs is in the wheel bearings of the landing gear, and it is overcome all the time by planes around the world. Spinning twice as fast doesn't create any significantly new friction.
unklejman 4 years ago
The treadmill DOES matter though. The wheels are required for a ground takeoff. Jet engines may use air as a form or propulsion, but the wheels allow the plane to roll across the ground. If the treadmill matches the wheel speed no rolling occurs. No rolling = no forward movement = no takeoff. This is why we have harriers and helicopters, and why aircraft carriers use a catapult system.
HoLeeKau 4 years ago
The treadmill doesn't match the wheel speed, that creates a physics cunundrum. The scenario is that the treadmill speed inversely matches the forward motion of the plane.
luvlidestiny4u 4 years ago
Apparently what you people aren't understanding here is what the purpose of wheels on an airplane is. All wheels do is prevent friction with the ground to the greatest extent possible. That is, they allow the airplane sitting on the wheels to act completely independently from the ground below.
GoDownFighting24 4 years ago
Think of it this way. If the plane approached to land at 150 knots and the treadmill was spinning the opposite direction at 150 knots, would the plane instantly stop moving when it touches down, or would the wheels just have to spin a lot faster than normal (300 knots) while the plane rolls down the runway? Come on people, think...this isn't as hard as you're making it.
GoDownFighting24 4 years ago
Ok picture a float plane taking off in a river. Now picture that the river matches the speed of the plane by flowing against its forward progess, the plane would not move it would stay stationary and not take off.
Spayne007 4 years ago
How much friction is there between a float and a river? How far down do you think a float sinks into the water? Do you know how much drag that is? Now compare it to a plane on the ground with wheels. The plane still would move forward in the river but not nearly as easily as the one on the treadmill. It's all about the friction...or lack thereof.
GoDownFighting24 4 years ago
but either way the treadmill would speed up proportional to the speed of the plane so stil...
If you put a plane and just sit it on the treadmill, turn on the treadmill, it would still move backwards until you had thrust to balance that motion. From there the treadmill would still speed up proportional to the planes speed so it still wouldn't move.
Spayne007 4 years ago
Search youtube. There's a video of somebody doing this and showing how stupid you are. It's a video of a guy with his little kid. His little kid understands better than you do and he's like 3 years old.
GoDownFighting24 4 years ago
Yeh but he keeps the treadmill at one speed you dumb fuck
Spayne007 4 years ago
It doesn't matter you dumb fuck. The treadmill was going 10mph, which is faster than that little air hogs plane can ever go.
GoDownFighting24 4 years ago
That's because your environment is different. the river is an active reverse force acting against the plane itself.
the treadmill is only acting against the wheels.
course if anyone followed your logic, then hydrofoils would never work.
OTrun 4 years ago
If the frictional force of the river to the floats is the same or greater than the force of the thrust then the plane will remain still or continue to flow backwards. The plane must overcome the frictional force of the water the same as it would have to overcome the frictional force of the bearings in the wheels. The "speed" of the river would still not matter, it's the "frictional force" that must be overcome by the plane.
robert0380 4 years ago 4
The wheels would just be spinning back, yes, but the ENGINES will thrust the body of the plane forwards.
thyran 4 years ago
I can not believe that people think it wouldn't take off. Stupid, un-educated clowns.
The funny part is that they are so certain that it wont. haha the plane gets momentum from the air flowing past it. It would take off completely normally in the same distance but the wheels on the ground would be roating at a crazy speed.
eightyeight1 4 years ago 2
What are you? Fucking retarded? How many planes do you know take off without wheels, which is the WHOLE POINT of the experiment. The treadmill is going to spin the WHEELS backwards while the thrust from the prop moves the plane forward to rotation speed, ass.
mo439470 4 years ago
the way airplanes fly is the wings create a high pressure zone beneathe them by slowing that air down and a lover pressure zone above the wings by speeding up that air. the high pressure makes it so that the aircraft is able to lift up into the air. it all depends on the shape of the wing. no speed, or air= no flight
evilshowerhead 4 years ago
that dickjuice guy is correct the plane WILL NOT take off. the tredmill is not going at the same speed as the plane
allvids 4 years ago
the plane cant take off you idiot
the treadmill is not automatically adjusting its speed to the planes new speed. omg you are such a moron. i'm an engineering student i know what im talking about here.
penilesecretions 4 years ago
Well engineering student, you must've failed physics. The aircraft's thrust has nada to do with the treadmill/wheels. The force imparted via the treadmill to the wheels is NOT enough to stop the aircraft from accelerating and rotating.
Moron.
wbarnhill 4 years ago 2
you imbecile, the treadmill is matching the speed of the plane, IT CANT TAKE OFF, what are you, retarded?
penilesecretions 4 years ago
Alas you're lacking the element of lift.
But it was pretty funny.
I'm sure I'd have fun doing that.
Cept maybe not with a plane.
I think I'd use a remote controlled car.
Just drive on forever...
While staying in the same spot :|
Jeefwee 4 years ago
brutally funny non-science.
shmaabibbles 4 years ago
No shit Sherlock.
RancidSLP 5 years ago
Rancid you are a fuckin moron.
mitchio83 5 years ago
It will work, the wheels dont provide the thrust, the propeller/jet does therefore the wheels will spin, the wrong way but it will still take off
241stskipper 5 years ago
Thanks for answering a question everyone knew the answer to.
RancidSLP 5 years ago
well evedently mrKnumbskull didnt..
241stskipper 5 years ago
Or maybe I know who he is and he's joking. Thanks for playing, try again.
RancidSLP 5 years ago
Any idiot can figure out it will never take off. How can it if the treadmill is keeping it from moving?!?!
mrknumbskull 5 years ago
You smell like old ladies in Blackhawk.
RancidSLP 5 years ago