Ooh, I am sure some of ya'll will be a little perturbed, as some were last time.
In case you do not remember, I posed a question a while back that caused some debate. The question was as follows:
If an airplane is sitting on a conveyor belt as long as a runway, and the conveyor belt moved in the opposite direction of the plane, proportionate to the plane's speed, would the plane be able to take off? A Cessna sitting on the conveyor runway, traveling at 10 mph would have the conveyor runway moving backwards at 10 mph. The plane going 25 mph, the conveyor goes 25 mph. Remember, I am not saying the plane can take off at 10 or 25 mph, I am just giving an example (last time, this caused some major confusion in a few people). Keep in mind that the airplane is propelled forward by the propeller moving the air, not by the wheels pushing the ground. This is what enables float planes to take off from the water, because they certainly do not have a propeller in the water pushing them forward.
Now let's youtube the question and see what we come up with. Ahhh, this looks promising. http://www.youtube.com/watch?v=-EopVDgSPAk
If you are hasty, you can skip to 2 minutes in. The guy just poses the question, asks his son and blah blah blah. I believe the airplane is moving forward by golly, even when the treadmill speed is exceeding the speed at which the plane is capable of going. The kid gets in the way at the end, so you can only see it move about one plane length and then out of view, but I assure you, it keeps on truckin'.
In short, the airplane will take off, regardless of the conveyor speed. A car has to match the speed to stay in one spot, and overcome that speed to gain any ground, since it is propelled forward by the very same wheels that touch the ground. An airplane does not have this problem, since the wheels on a plane do not push it forward, they only roll it in the direction the propeller is sending the plane.
In case you do not remember, I posed a question a while back that caused some debate. The question was as follows:
If an airplane is sitting on a conveyor belt as long as a runway, and the conveyor belt moved in the opposite direction of the plane, proportionate to the plane's speed, would the plane be able to take off? A Cessna sitting on the conveyor runway, traveling at 10 mph would have the conveyor runway moving backwards at 10 mph. The plane going 25 mph, the conveyor goes 25 mph. Remember, I am not saying the plane can take off at 10 or 25 mph, I am just giving an example (last time, this caused some major confusion in a few people). Keep in mind that the airplane is propelled forward by the propeller moving the air, not by the wheels pushing the ground. This is what enables float planes to take off from the water, because they certainly do not have a propeller in the water pushing them forward.
Now let's youtube the question and see what we come up with. Ahhh, this looks promising. http://www.youtube.com/watch?v=-EopVDgSPAk
If you are hasty, you can skip to 2 minutes in. The guy just poses the question, asks his son and blah blah blah. I believe the airplane is moving forward by golly, even when the treadmill speed is exceeding the speed at which the plane is capable of going. The kid gets in the way at the end, so you can only see it move about one plane length and then out of view, but I assure you, it keeps on truckin'.
In short, the airplane will take off, regardless of the conveyor speed. A car has to match the speed to stay in one spot, and overcome that speed to gain any ground, since it is propelled forward by the very same wheels that touch the ground. An airplane does not have this problem, since the wheels on a plane do not push it forward, they only roll it in the direction the propeller is sending the plane.
but now I can see where Tarkus, you are coming from...
LMAO... This again?... Of course tarkus is right, the plane takes off easily...
--->Pops
