- #71
.Scott
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The key is that there is a specific spin to speed ratio that is approached asymptotically from either direction. To demonstrate that, all you need to demonstrate is that both the spin and speed friction is a function of the same spin to speed ratio, that each goes from near zero to a much larger value, and that they are both monotonic but one is increasing while the other is decreasing.
Given those constrains, they have to cross at a certain spin to speed ratio - and that that ratio, whatever it is, will be approached asymptotically as the book slows.
When I start that post, I was thinking I would attack the actual integration problem. But I don't have the time. But if you simply draw out the graphics as if you were about to attack that integration, all of the points I listed in the first paragraph become very evidently true.
Anyone who calculates "b" or rather b/r completes the proof.
Given those constrains, they have to cross at a certain spin to speed ratio - and that that ratio, whatever it is, will be approached asymptotically as the book slows.
When I start that post, I was thinking I would attack the actual integration problem. But I don't have the time. But if you simply draw out the graphics as if you were about to attack that integration, all of the points I listed in the first paragraph become very evidently true.
Anyone who calculates "b" or rather b/r completes the proof.