Life Pick 5 posters you'd like to have dinner with.

**Donger** · 08-25-2009, 04:18 PM

Quote:

Originally Posted by Jenson71

I always thought the treadmill would be going the opposite way of the plane's forward motion (or attempt at motion).

Again, if the wheels were spinning, it would make no difference.

stevieray · 08-25-2009, 04:28 PM

Quote:

Originally Posted by Donger

Again, if the wheels were spinning, it would make no difference.

they used a plane and a 1oooft tarp being pulled the opposite direction.

the pilot said before the attempt didn't he think it would work either. maybe you're related

**Donger** · 08-25-2009, 04:32 PM

Quote:

Originally Posted by stevieray

they used a plane and a 1oooft tarp being pulled the opposite direction.

the pilot said before the attempt didn't he think it would work either. maybe you're related

Yes, I just watched it. You'll note that the plane was moving relative to the ground, which of course caused air to flow over the wings and produced the requisite lift.

**DaFace** · 08-25-2009, 04:33 PM

Quote:

Originally Posted by Donger

Yes, I just watched it. You'll note that the plane was moving relative to the ground, which of course caused air to flow over the wings and produced the requisite lift.

And were its wheels spinning when it took off?

**Donger** · 08-25-2009, 04:36 PM

Quote:

Originally Posted by DaFace

And were its wheels spinning when it took off?

Yes, because it was moving relative to the ground.

**Buck** · 08-25-2009, 04:39 PM

Quote:

Originally Posted by Donger

Yes, because it was moving relative to the ground.

Do you know why in that video the plane was moving forward relative to the ground?

I guess if the you could say if a plane is not moving forward relative to the ground then it cannot take off. But I thought the question was worded saying if the wheels were spinning at the same rate as the conveyor belt.

**Donger** · 08-25-2009, 04:42 PM

Quote:

Originally Posted by BuckinKaeding

Do you know why in that video the plane was moving forward relative to the ground?

I guess if the you could say if a plane is not moving forward relative to the ground then it cannot take off. But I thought the question was worded saying if the wheels were spinning at the same rate as the conveyor belt.

Because it is not an accurate test of the theory, as I said earlier. If the plane's wheels are not locked and free to spin, the treadmill underneath the plane would simply spin the plane's wheels and the plane would not move forward at all. If the plane is not moving forward (that's how planes generate enough speed to move enough air over the wings to produce lift), the plane will not take-off.