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If I wasnt clear enough - do the said experiment with open palm - plane resting on the palm. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />


The fact that the airplane hits you in the head at that point is simply because there is not enough lift achieved by the time it runs off of your hand to overcome gravity.


And why is that? Because speed relative to a point on the ground in stationary air is not enough. Its not enough because in this case my running speed cannot overcome the the opposite reaction to the treadmill. In the case of the riddle it is because the work done by the thrust of the engine is cancelled by a spontaneous equal and opposite reaction.

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Maybe that experience would be your equivalent of Newton's apple. Maybe you should try it... <img src="/forums/images/graemlins/butwiggle.gif" alt="" /> <img src="/forums/images/graemlins/pfft.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" />


I have - have you? <img src="/forums/images/graemlins/butwiggle.gif" alt="" /> All those teen years spent on pricey gizmos apparently were not in vain.

You clearly state gravity has a part in this but not in the riddle - you need to catch some Z's bro. <img src="/forums/images/graemlins/drunk.gif" alt="" />

Frictionless bearings I will accept. But you are implying that there is no gravity in the riddle - which is ludicrous.

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