Plane on a Conveyer Belt

[IamDeMan 5,000+ posts]

not much of a math wizard but saying if the belt is moving at take off speed (idk lets say 120mph) and the plain was not started it would be moving backwards at 120 mph.(sounds stupid i know and probably wouldt sit still) but if the plain engine was started and got to take off speed (same as belt) it would become stationary like a hamster on a treadmill, moving but sationary. it would then need to accelerate to 220 to achieve a momentum or actual speed of 120 with relevance of air speed. i hope im being clear

No it wouldn't. Stop thinking abot it, because you are looking at it wrong.

 

[IamDeMan 5,000+ posts]

Now we know yours. //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

YOU BASTARD!

 

[ngsm13 5,000+ posts]

not much of a math wizard but saying if the belt is moving at take off speed (idk lets say 120mph) and the plain was not started it would be moving backwards at 120 mph.(sounds stupid i know and probably wouldt sit still) but if the plain engine was started and got to take off speed (same as belt) it would become stationary like a hamster on a treadmill, moving but sationary. it would then need to accelerate to 220 to achieve a momentum or actual speed of 120 with relevance of air speed. i hope im being clear

You're an idiot.

nG

 

[AllStar1500bd 5,000+ posts]

It will fly.

 

[AllStar1500bd 5,000+ posts]

If it's done right //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Pl8er 5,000+ posts]

Where is the actual explanation of what is trying to be done?

I'm lost with what the actual myth is. Are they saying that a plane on a conveyor will lift off if its running at the same speed as the conveyor....

OR

are they saying the plane will take off if it moves over the speed of the conveyor at any rate of speed?

 

[DBfan187 5,000+ posts]

read the stickies

 

[hoss 5,000+ posts]

Where is the actual explanation of what is trying to be done?
I'm lost with what the actual myth is. Are they saying that a plane on a conveyor will lift off if its running at the same speed as the conveyor....

OR

are they saying the plane will take off if it moves over the speed of the conveyor at any rate of speed?

thus why this is more of a riddle than a myth.

 

[Pl8er 5,000+ posts]

Well it is bugging me because I can see both sides so I took it to my engineering department at work.

They are doing some really complex math on it right now. They are basing it on the plane being thrusted to 300mph (i had to give them a value) and the treadmill also running at 300mph.

 

[ngsm13 5,000+ posts]

Well it is bugging me because I can see both sides so I took it to my engineering department at work.
They are doing some really complex math on it right now. They are basing it on the plane being thrusted to 300mph (i had to give them a value) and the treadmill also running at 300mph.

Which means the wheel would be spinning at 600mph... and the plain will simply take off...

nG

 

[qtipextra 5,000+ posts]

What I am understanding for this experiment is that the plane will be going takeoff speed, but the conveyor belt will going the EXACT same speed in the opposite direction. The question is (under my understanding) "Will the plane be able to take off?"

If this is correct, then that would mean that the question IS NOT "Will it move forward". Of course it will move forward, if the plane goes faster then the belt. But they are supposed to me matched for speed. And if the speed of the PLANE itself (regardless of wheel speed) is matched to the speed of the conveyor belt. IT WILL NOT BE MOVING (as relative to a stationary object) and therefore mean NO air movement over the wings, and plane will not take off.

-------------

Now it would be different if the plane was already flying. The belt speed would have no relevance to the plane at that point. But since there is a connection to the belt (via the wheels) it does have to overcome the speed of the conveyor belt all together, but it would be going faster then the belt and the experiment wouldn't be valid.

 

[IamDeMan 5,000+ posts]

What I am understanding for this experiment is that the plane will be going takeoff speed, but the conveyor belt will going the EXACT same speed in the opposite direction. The question is (under my understanding) "Will the plane be able to take off?"
If this is correct, then that would mean that the question IS NOT "Will it move forward". Of course it will move forward, if the plane goes faster then the belt. But they are supposed to me matched for speed. And if the speed of the PLANE itself (regardless of wheel speed) is matched to the speed of the conveyor belt. IT WILL NOT BE MOVING (as relative to a stationary object) and therefore mean NO air movement over the wings, and plane will not take off.

-------------

Now it would be different if the plane was already flying. The belt speed would have no relevance to the plane at that point. But since there is a connection to the belt (via the wheels) it does have to overcome the speed of the conveyor belt all together, but it would be going faster then the belt and the experiment wouldn't be valid.

Only the wheels will go faster than the belt. The plane will go 100MPH air speed in one direction while the conveyor does 100MPH in ground speed the opposite direction.

Additionally if the belt has no bearing while a plane is in flight, then it has no bearing while it rests on it. The wheels are free spinning, numb nuts.

 

[shortyg83 10+ year member]

What I am understanding for this experiment is that the plane will be going takeoff speed, but the conveyor belt will going the EXACT same speed in the opposite direction. The question is (under my understanding) "Will the plane be able to take off?"
If this is correct, then that would mean that the question IS NOT "Will it move forward". Of course it will move forward, if the plane goes faster then the belt. But they are supposed to me matched for speed. And if the speed of the PLANE itself (regardless of wheel speed) is matched to the speed of the conveyor belt. IT WILL NOT BE MOVING (as relative to a stationary object) and therefore mean NO air movement over the wings, and plane will not take off.

-------------

Now it would be different if the plane was already flying. The belt speed would have no relevance to the plane at that point. But since there is a connection to the belt (via the wheels) it does have to overcome the speed of the conveyor belt all together, but it would be going faster then the belt and the experiment wouldn't be valid.

What your saying is like saying if a plan flew over a conveyor belt going say 300mph the plan would just stop.

Remember key thing here is the wheels do not matter. if the plane is moving say 50 mph forward and the the treadmill moves 50mph backward it will no affect the plane. The wheels are in neautral. They have no say whatsoever on the speed of the plane.

Plane= 50mph forward

threadmill= 50mph backward

wheels(which dont matter because they are just there in neutral to reduce friction)100mph

 

[UndercoverPunk 5,000+ posts]

Okay... for all the kids that say it won't fly.

If they used a gigantor fan to generate a tail wind that could match the thrust of the plane then it wouldn't take off.

Wheels have dick to do with lift.

 

[UndercoverPunk 5,000+ posts]

Just making sure you kids know it's NEXT week.