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Don't be silly mate, Read Newton's third law.
conveyor belt and plane answered at last ??
- Thread starter big-all
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Don't be silly mate, Read Newton's third law.
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Read it.
The plane is moving in relation to what is ITS ground, ie the conveyor belt. If you were standing on the conveyor belt the plane would be moving. Stand off the conveyor belt the plane is stationary.
The thrust of the engine is propelling the plane forward but as long as it is moving at equal/opposite speed to the conveyor belt it appears still. Depend on where you are and your view point of the events.
The plane cannot take off as it relies on the air speed over the wings to provide lift. Unless we are adding heavy winds to the equation?
The plane is moving in relation to what is ITS ground, ie the conveyor belt. If you were standing on the conveyor belt the plane would be moving. Stand off the conveyor belt the plane is stationary.
The thrust of the engine is propelling the plane forward but as long as it is moving at equal/opposite speed to the conveyor belt it appears still. Depend on where you are and your view point of the events.
The plane cannot take off as it relies on the air speed over the wings to provide lift. Unless we are adding heavy winds to the equation?
That would be an interesting experiment if done on a large scale.
Get a stationary jumbo jet, generate huge winds to flow over the wings, see what power is needed to make a stationary jumbo jet "fly" whilst it stays in the same position relative to the Earth.
I've got a desktop fan doitall, have you? Lets start collecting them. Then we just need John Travolta and one of his big planes.
Get a stationary jumbo jet, generate huge winds to flow over the wings, see what power is needed to make a stationary jumbo jet "fly" whilst it stays in the same position relative to the Earth.
I've got a desktop fan doitall, have you? Lets start collecting them. Then we just need John Travolta and one of his big planes.
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Yeah, I'm sorry, but we have a stalemate.
How can the conveyor counter the forward motion of the plane when it is acting on the free-wheeling wheels, not the plane itself?
How can the conveyor counter the forward motion of the plane when it is acting on the free-wheeling wheels, not the plane itself?
You are correct, It obviously can't.
What they seem unable to grasp is........
If the plane is standing still, it generates no wheel speed for the conveyor to respond to.
The plane MUST be moving FORWARD, creating wheel speed, for the conveyor to move.
If they honestly believe that the conveyor prevents any forward movement, no matter what the speed.
Then they must believe that a plane coming into land on this conveyor must stop instantly.......
This is obviously nonsense
Read the red bit again really slowly several times then put the brain in gear.
It's an impossible problem, it cannot happen, there's no way in this world to comply, the only time they can be the same is when stationary.
example. Plane doing 1mph, conveyor doing 1mph, wheels will be doing 2mph
We been through all this Securesparks.
If you stand the plane on the moving conveyor, the plane will move with the belt, try it next time you go to Tesco, the wheels will not be turning.
now start the engine and give it enough power to stop the plane moving, the wheels will now be turning.
Hold the plane on the Tesco conveyor and test the theory, it's very simple.
I've been telling you the question is flawed for the past fookin week.
How can it be flawed, it's a thinking question, a puzzle, it's not real life and was never intended to be.
All you have to work out is will the plane take off or not.
And I must have told you that at least a hundred time in this thread.
Oh dear Lord.
D
Deleted member 63160
[quote="doitall";p="2485698"
example. Plane doing 1mph, conveyor doing 1mph, wheels will be doing 2mph[/quote]
How about plane doing 1 mph driven by engines, wheels spinning freely as plane moves, belt tracks wheels speed as you highlighted. You say the plane is doing 1mph so the wheels are doing 2mph. On that basis they are doing 2mph relative to the belt. Clearly the belt is doing 2mph relative to the wheels then. Repeat this model at 2mph, 3mph,4mph until the plane gets fast enuff to take off
example. Plane doing 1mph, conveyor doing 1mph, wheels will be doing 2mph[/quote]
How about plane doing 1 mph driven by engines, wheels spinning freely as plane moves, belt tracks wheels speed as you highlighted. You say the plane is doing 1mph so the wheels are doing 2mph. On that basis they are doing 2mph relative to the belt. Clearly the belt is doing 2mph relative to the wheels then. Repeat this model at 2mph, 3mph,4mph until the plane gets fast enuff to take off
Very good mitch I see you are a fast learner
When the plane reaches 85knots or about 97.816mph the plane will take off.
Now assuming the conveyor is doing the same the wheels are doing 185.632 mph at take off.
Back to the question The speed of the Conveyor matches the speed of the planes wheels
Think we may have a problem.
When the plane reaches 85knots or about 97.816mph the plane will take off.
Now assuming the conveyor is doing the same the wheels are doing 185.632 mph at take off.
Back to the question The speed of the Conveyor matches the speed of the planes wheels
Think we may have a problem.
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