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Originally Posted by durrell
It can take off regardless of the wheels or what the treadmill is doing. The thrust generated by the engines is dependent on the air behind the plane, not the wheels. The wheels may burn up because of the friction, but it doesn't matter..it's still able to move forward and take off. The physics and math have been solved and it will work. I really don't see how people can think it won't take off in any scenario of the treadmill. It doesn't matter if the treadmill is moving faster backwards or even at the same speed, the wheels have absolutely nothing to do with the plane taking off.
Edit: But like you said, this question is made so as to trip people up with different wording. I've always and will always say the plane takes off, though, regardless.
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easy. if the treadmill is moving at 200 mph, and the wheels are moving 200 mph in the oppisite direction then the plane is actually NOT MOVING (meaning the engines are only doing enough to keep the plane stationary because the treadmill and wheels are moving at the same speed in opposite directions).
Yes, the plane can take off from a treadmill because what the treadmill is doing is irrelevant to what the engines are doing but
200mph ---->
<---- 200mph
means no movement relative to the air. its not about what the plane CAN do, it's about what the plan IS doing and in this case, it is not moving relative to the air because the movement of the treadmill and the movement of the wheels cancel each other. put it this way. if the plane needs to reach 200mph (relative to air) and the treadmill is moving 200mph in the opposite direction then the wheels would need to be moving at 400 mph before the velocity of the plane reaches the required 200mph for liftoff.
I've always said it will take off but the way the question is posed makes a huge difference.
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Originally Posted by CT_Nismo
Compasses are aligned with magnetic north. If on this trip, the heading is south on the Prime Meridian, you would expect to end up in Greewich England. However, because the earth is rotating, you end up somewhere over the Atlantic.
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why do people feel the need to do this? yes, it's off topic, that doesnt mean spam away. off topic means not frontier related, the posts still have a topic even if they dont have a point.
isnt there a spamwhore thread floating around for people to post random crap in?
