Pussenboots
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Here, letes remove the tredmill, remove the wheels. Fire up the engines, pull back on the stick and not go anywhere.
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...If you want to recreate the wheels, drag your feet on the bottom of the pool while you swim, you'll still move.
i think Manikalas nailed it. If you have a long enough treadmill and enough thrust the plane will take off. As soon as the force of the jet engines is greater than the force exerted on the plane due to gravity you will move forward.
Given only that information. The plane will not take off. AGAIN, for every instance of the plane gaining forward momentum, the treadmill runway exerts the exact opposite force.
But if the treadmill is monitoring the speed of the plane and is matching it. The plane will never be moving down the treadmill at over 150 MPH.
This is where you have it wrong. It exerts the exact opposite velocity. Force can only be created from velocity by applying friction. However, there are only 2 wheels on the ground, each of which has a very small amount of surface area in contact with the ground. This small amount of friction will never produce enough force to counteract that of the engine thrust, and then plane should end up skidding forward along the track.
As the plane moves forward, the treadmill moves rearward, in the opposite direction the plane is moving, at the same speed.
Whoops, yes, velocity. But read the first post. The treadmill is matching the velocity of the plane, thus keeping it still.
It would only keep it still if the friction between the wheels and the surface created enough force to keep it from skidding. It's like when you slam on the brakes, you don't stop instantly you skid along the road a little ways. If you give yourself sticky tires, you can stop even faster but still not instantly.
The same concept applies here. The force from the engines is so great that the friction is not enough to counteract it, even if the treadmill is going a million miles per hour.
Yes but that is not the only force holding the plane down. You have 4 forces. 1. the treadmill 2. gravity 3. friction 4. Air causing some resistance for movment speed. Take any one of those factors out and yes the plane will fly. And like stated before that the system matches it perfectly. Remeber no lols the system is broken.
The treadmill is backwards force not allowing it to gain lift. the friction happens even if there isn't any treadmill. its happens when landing gear is on normal runways. Its just the force of the plane going faster is causing a lot more friction then normal along with the treadmill pulling the plane backwards.
It doesn't mention where the speed is measured. It only says that the forward speed of the plane is matched by the rearward speed of the runway. Plane goes nowhere.
As the plane moves forward, the treadmill moves rearward, in the opposite direction the plane is moving, at the same speed.
Both speeds with respect to the ground, not the speed of the plane with respect to the treadmill. ^_^bAs the plane moves forward, the treadmill moves rearward, in the opposite direction the plane is moving, at the same speed.