Final answer to the airplane on a long treadmill problem ...

[Ruiner]

correct but the engines only propelle the jet forward creating an upforce on the wings wich are what lifts the jet. just like when u drive in the car and hold ur hand out of the window the higher the speed the harder it is to lower ur hand becasue the forward thrust is what is causing ur hand to lift same thing with a jet the engines push forwrd and the wings lift.

Yes, we all know what causes lift. What I am showing IA.com is that the treadmill moving backwards WILL NOT affect the forward movement of the plane.

[Hektik]

Yes, we all know what causes lift. What I am showing IA.com is that the treadmill moving backwards WILL NOT affect the forward movement of the plane.

If the treadmill is moving backwards at the same speed as the plane is moving forward how will the plane actually move forward. when u run on a treadmill no matter how fast u are running as long as u are running at the same speed as the treadmill u stand in one place right.

[Ruiner]

If the treadmill is moving backwards at the same speed as the plane is moving forward how will the plane actually move forward. when u run on a treadmill no matter how fast u are running as long as u are running at the same speed as the treadmill u stand in one place right.

Umm, the engines will push it forward. The engines act on the air, not the ground. The wheels spin freely and have NO power to them. You understand this, correct? It's the same as if you are on a treadmill with roller skates and you strap on a jetpack to push you forward.

Better yet, stand on a treadmill and have a friend pull you with a rope. That rope = jet engines