Can we point and laugh joking. It was a good question..had us all thinking We should start a puzzle thread just for things like this
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How can the wheels move at the same speed as the tread. While the plane is moving faster? The plane can't leave it's wheels behind. If the tread mill is matching the speed of the wheels. They can't move forward because if they started to. The tread mill compensates and moves faster too.
This results in zero net forward movement. For the wheels to move forward. They have to be moving faster than the tread mill, but they can't because it speeds up and continues to travel at the same rate as them.
Without net forward movement. The plane will remain stationary on the platform. It's forward motion. Is always countered by the tread's rearward motion. Which means the wheels while spinning, AND the plane they are connected to remain stationary on the platform.
The plane can move as fast as it wants on the treadmill. As long as the treadmill moves and accelerates in the opposite direction at the same speed. It will never be able to move forward in relation to the air around it.
The thrust of the jet's engines alone is not enough to lift the plane off the ground. Zero air speed equals zero lift.
In other words the plane will be going no where fast.
How can the wheels move at the same speed as the tread. While the plane is moving faster? The plane can't leave it's wheels behind. If the tread mill is matching the speed of the wheels. They can't move forward because if they started to. The tread mill compensates and moves faster too.
This results in zero net forward movement. For the wheels to move forward. They have to be moving faster than the tread mill, but they can't because it speeds up and continues to travel at the same rate as them.
Without net forward movement. The plane will remain stationary on the platform. It's forward motion. Is always countered by the tread's rearward motion. Which means the wheels while spinning, AND the plane they are connected to remain stationary on the platform.
The plane can move as fast as it wants on the treadmill. As long as the treadmill moves and accelerates in the opposite direction at the same speed. It will never be able to move forward in relation to the air around it.
The thrust of the jet's engines alone is not enough to lift the plane off the ground. Zero air speed equals zero lift.
In other words the plane will be going no where fast.
The forward speed of the surface of the tires is equal in speed to the surface of the treadmill/ground, because the wheel spins freely and is in contact with the treadmill until liftoff. They are coupled together so they travel at the same speed in relation to one another.How can the wheels move at the same speed as the tread. While the plane is moving faster? The plane can't leave it's wheels behind. If the tread mill is matching the speed of the wheels. They can't move forward because if they started to. The tread mill compensates and moves faster too.
This results in zero net forward movement. For the wheels to move forward. They have to be moving faster than the tread mill, but they can't because it speeds up and continues to travel at the same rate as them.
Without net forward movement. The plane will remain stationary on the platform. It's forward motion. Is always countered by the treads rearward motion. Which means the wheels while spinning, AND the plane they are connected to remain stationary on the platform.
The plane can move as fast as it wants on the treadmill. As long as the treadmill moves and accelerates in the opposite direction at the same speed. It will never be able to move forward in relation to the air around it.
The thrust of the jet's engines alone is not enough to lift the plane off the ground. Zero air speed equals zero lift.
In other words the plane will be going no where fast.
The forward speed of the surface of the tires is equal to speed the surface of the treadmill/ground, because the wheel spins freely and is in contact with the treadmill until liftoff. They are coupled together so they travel at the same speed in relation to one another.
The speed of the airplane in relation to the Earth, is different than the speed of the wheels in relation to the treadmill surface. (which is stationary on the ground ).
As long as the plane is moving along the treadmill then it is moving through the air - move fast enough and it lifts. As long as its possible for the plane to gain some net velovity then we can assume it is possible for it to take off. Edit: I mean as long as its moving forward and not in equalibrium
A wheel is always traveling at the same rate as the gound passing underneath it. Unless you break traction.The plane can't outrun it's own wheels! It can only move as fast as they do. If they can't be pushed forward by the thrust of the jet, because they are being countered by the rearward movement of the runway. They can't move forward, and niether can the plane.
It's just like I said. For the plane to move forward the wheels HAVE to be spinning faster than the tread is moving. They can't though because their forward motion is always countered by the tread's rearward motion. Which is always the same as the speed of the wheels.
Even Nestor? wtf does that mean?
No, the thing that misled me was the assumption that the jet uses it wheels to 'kick off' on the ground - it doesn't - one way of looking at it is that its engine is like a corkscrew, drilling thru the air - it moves relative to the air. If you like it pushes off against the column of air going thru/behind it.
Therefore the motion of the wheels/treadmill is of minor importance.
A wheel is always traveling at the same rate as the gound passing underneath it. Unless you break traction.
Think of it this way,
are you moving forward 10mph toward your destination,
or is your destination moving towards you at 10mph,
or are you and your destination converging towards each other at 5mph each?
The ground is not moving, the surface of the treadmill is. As well as the surface of the tires. The ground only moves in relation to the body of the plane after the engines thrust it forward, or the plane puts on its brakes.Yep, your right. Except for the fact that this ground is moving. If your wheel moves at 10 MPH and the tread is moving at 10 MPH hour in the opposite direction. You are moving zero MPH in relation to the platform the tread is on. Resulting in zero net movement.
If you speed up to 10.1 MPH. You would be moving .1 MPH in relation to everything else. This treadmill is designed to detect that though. So when you speed up to 10.1, so does it. So now you are both going 10.1 MPH. Which results in zero net movement for your car, plane, or whatever else.