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Old 12-08-2006, 12:17 PM   #1
Flint
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imagine this, but six times...

Quote:
Originally Posted by glatt
Unlike the treadmill, which provides no restraint for the plane.
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Old 12-08-2006, 12:26 PM   #2
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And with that, this thread is finished
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Old 12-08-2006, 12:48 PM   #3
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Quote:
Originally Posted by LabRat
And with that, this thread is finished
/me didn't get the memo in time
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Old 12-08-2006, 03:15 PM   #4
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aren't we back on the treadmill?
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Old 12-08-2006, 03:23 PM   #5
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Quote:
Originally Posted by barefoot serpent
aren't we back on the treadmill?
Nope -- landing is an entirely different problem.
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Old 12-08-2006, 03:41 PM   #6
Torrere
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Quote:
Originally Posted by barefoot serpent
aren't we back on the treadmill?
We're running a rat race on a treadmill with a LabRat
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Old 12-08-2006, 05:24 PM   #7
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By the way, the question doesn't say it's a jet.
Just as it doesn't say the planes movement is relative to any thing.:p
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Old 12-09-2006, 09:03 AM   #8
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What TW Meantto say

It's George Jr's fault...mental midget....seven seconds... top management... limbaugh disciples... no WMD...
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Old 12-09-2006, 09:23 AM   #9
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Quote:
Originally Posted by lookout123
What TW Meantto say

It's George Jr's fault...mental midget....seven seconds... top management... limbaugh disciples... no WMD...
Ya forgot MBAs that ordered that stupid treadmill.
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Old 12-09-2006, 12:58 PM   #10
tw
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Quote:
Originally Posted by lookout123
It's George Jr's fault...mental midget....seven seconds... top management... limbaugh disciples... no WMD...
George Jr is the observer? No wonder an accurate answer is not possible!
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Old 12-09-2006, 09:15 AM   #11
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As long as the "it won't fly" people are continuing to be maroons, let me point out that an airplane sitting on the runway with the engine *off* (or with no engine at all) will take off all by itself if the wind speed exceeds the stall speed. This is why we tie aircraft down: wheel chocks aren't sufficient in the case of a lightly wing-loaded aircraft in the presence of a stiff breeze.

With sufficient wind speed, an airplane can take off (or be landed) with *zero* forward motion relative to the ground. There's a standard airshow demo that's done in STOL-type airplanes (Piper Cub, or maybe a Maule or Zenith CH-701) that involves hovering and even flying backwards when the wind speed is high enough.
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Old 12-08-2006, 06:49 PM   #12
tw
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Clearly this problem has so confused so many and yet no one has yet asked about landing. Are there terrorists among us?

Just another reference point to keep us confused.
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Old 12-09-2006, 09:06 AM   #13
skysidhe
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The original question says the treadmill matches the planes speed. It cancels out. The plane isn't moving forward to create airflow over and under the wings so it isn't going to fly.
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Old 12-09-2006, 09:37 AM   #14
hideouse
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it's a trick question.

Quote:
Originally Posted by skysidhe
The original question says the treadmill matches the planes speed. It cancels out. The plane isn't moving forward to create airflow over and under the wings so it isn't going to fly.
it doesn't matter that the treadmill matches the planes speed. The wheels aren't driving the plane. The treadmill will only affect the rotation of the wheels, which will only affect the movement of the plane if the brakes are applied and the surface of the treadmills won't allow a skid. In which case the tires will eventually blow and the plane will skid on it's rims.

The treadmill can make the wheels be still by matching the forward movement of the plane. it can make the wheels roll backward while the plane moves forward by moving faster than the speed of the plane. it can make the wheels move forward by moving slower than the speed of the plane. But until the plane becomes a car with a drive shaft mechanicallly linked to the engines the movement of the wheels will have no effect on the movement of the plane.
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Old 12-09-2006, 11:05 AM   #15
Flint
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Quote:
Originally Posted by hideouse
it doesn't matter that the treadmill matches the planes speed. The wheels aren't driving the plane.
The question states that the treadmill matches the plane's speed. Wheels be damned. If you believe the question, you believe the treadmill matches the plane's speed, regardless of what the wheels are doing. The question is: what is the plane's speed relative to? And this information is not provided. It's only a trick question in the sense that it tricks you into thinking there is any determinable answer. As it is stated, there isn't.
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There's a level of facility that everyone needs to accomplish, and from there
it's a matter of deciding for yourself how important ultra-facility is to your
expression. ... I found, like Joseph Campbell said, if you just follow whatever
gives you a little joy or excitement or awe, then you're on the right track.

. . . . . . . . . . . . . . . . . . . . . . . . . . Terry Bozzio
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