What I've known all along.
1. Of course the plane will fly, the speed of the treadmill/ plane wheels is not a variable.
2. Way too many letsrunners are idiots of the highest order.
What I've known all along.
1. Of course the plane will fly, the speed of the treadmill/ plane wheels is not a variable.
2. Way too many letsrunners are idiots of the highest order.
you need to chill out mpokora - if you can't tell that I was joking (especially comparing your post to the App state loss) than I don't know what to tell you.
It probably was a little overboard to look you up in the umich directory - but I worked at a research center there - so it took me two seconds to find your info. If you want to remain anonymous in the future than it's probably not a good idea to post your school e-mail address.
Another piece of advice - if you're going to say that it's "sad" that there are hundreds of posts on this topic you might want to make sure you have the correct answer ; )
One more question for all you people who think it will never take off.
What would happen if mid-flight I got into the place where the landing gear was placed and started spinning the wheels "backwards" as hard as I could?
Would the plane suddenly slow down?
If not, than how is that different from the effect the treadmill has on the plane when it's on the ground?
It's this easy: the plane can not take off without both thrust and lift. In order to achieve lift there must be air rushing over the wings. If in your hypothetical world the treadmill negates the thrust so that the plane does not move forward, then no amount of thrust will make the plane fly. You will ahve simply created a way to make an imaginary treadmill spin really, really fast.
Tre1nt wrote:
It's this easy: the plane can not take off without both thrust and lift. In order to achieve lift there must be air rushing over the wings. If in your hypothetical world the treadmill negates the thrust so that the plane does not move forward, then no amount of thrust will make the plane fly. You will ahve simply created a way to make an imaginary treadmill spin really, really fast.
The riddle doesn't say that this giant treadmill has broken any rules of physics. It doesn't say that it makes the plane stationary - it only says that the treadmill speed is the same as the plane speed. As planes are measured by how they move through the air (rather than on the ground) the plane does move. All a treadmill can do is spin the planes wheels - it can't counter the force of the engine because there is nothing that transfers the force of the treadmill to the body of the plane.
Tre1nt wrote:
It's this easy: the plane can not take off without both thrust and lift. In order to achieve lift there must be air rushing over the wings. If in your hypothetical world the treadmill negates the thrust so that the plane does not move forward, then no amount of thrust will make the plane fly. You will ahve simply created a way to make an imaginary treadmill spin really, really fast.
I would love to see a free body diagram for this, can you draw one for me?
Dude, if the plane is moving through the air at a speed that generates enough lift to counteract drag then
it
will
fly.
Why even discuss a treadmill if that's the supposition?
Just call the riddle "Can a plan fly?"
Rather
Just call the riddle "Can a plane fly?"
There is no other side to the argument, screwball.
All that video showed me was that a guy's kid's toy car was capable of going faster then the treadmill in his basement (while tied to a string).
Did you see anything fly?
exactly, that's pretty much what it is, "can a plane fly?" See, that's the riddle, people like you are getting tripped up by the treadmill part, which essentially has no effect whatsoever. The treadmill is not a factor.
Tre1nt wrote:
Dude, if the plane is moving through the air at a speed that generates enough lift to counteract drag then
it
will
fly.
Why even discuss a treadmill if that's the supposition?
Just call the riddle "Can a plan fly?"
The point of the riddle isn't to come up with some crazy way of making a plane fly. The point of the riddle is to play with what people think a treadmill means. Most of us have a hard time getting away from the thought of a treadmill keeping an object, which is "moving" in relation to the belt on the treadmill, "in place" in relation to the ground.
In this case the treadmill can't keep a plane stationary because the treadmill can only effect the wheels - and the wheels aren't "connected" to anything that effects the movement of the body of the plane.
In other words - when it comes to planes a treadmill can't do what we think a treadmill "should" do.
I'm not tripped up at all. A plane flies under certain, well-established circumstances. Giant treadmills have nothing to do with the price of tea in China. Some people use all caps and idle threats to compensate for silly arguments.
wow, just wow. I'm speechless. Truely speechless.
Seriously?! Honestly, I'm just sitting here shaking my head in disbelief. That comment is just so dumb, it needs no rebuttal.
Here's what I want you to do: take one of those online IQ tests and get back to me. I doubt it's 100. I know those results from the online ones are skewed (making your true IQ lower than an online one) since it's mostly redneck retarded redneck f*cks with no jobs taking them. Post your results/screenshots/whatever.
I see what you're saying.
The whole thing is even sillier than I thought ... people are just mistaking what a treadmill does.
Even crazier that some posters are flipping out about me not realizing the "other side" of this silly argument.
Jeez.
excuse me sir, I think you're missing one of these:
"redneck retarded redneck"
Okay, that's the mark of genius.
Super. Nice photo.
Planes can still fly.
Tre1nt wrote:
I'm not tripped up at all. A plane flies under certain, well-established circumstances. Giant treadmills have nothing to do with the price of tea in China.
...or the ability for a jet engine to produce thrust against it's surrounding air.
Again, the planes wheels/ treadmill are not factors.
And BTW yes, you are tripped up by this, almost to the point of futility. Unless you have some evidence of bearing falure or wheel malfunction, which we do not, you may wave goodbye to the hypothetical plane as it takes flight.
I am one of the people that agrees that the plane will take off, for obvious reasons. But, I do also believe that the treadmill is capable of holding the plane in place, in a very idealized envionment:
Since there is actually friction in the wheels it is theoretically possible for the force of the treadmill against the wheels to counteract the thrust of the engine. The problem is, the frictional coefficient in the wheels is extremely tiny. This would mean the speed of the treadmill would have to be extremely fast (hundreds of thousands of MPH, if not millions). The wheels would then have to spin along the treadmill at the same pace.
So, in conclusion, the treadmill could hold the plane in place IF:
1. The treadmill could spin hundreds of thousands of MPH.
2. The wheels of the plane could somehow bond to the treadmill and also spin at that same speed.
Since neither of these things could happen in real life, which is where the myth takes place, it is disproven.
So what you're saying is that in the "mythical real world" is that if the plane moves fast enough to fly it will (wait for it) ... fly.
