any help with this problem, /sci/? I don't even know where

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Anonymous
2016-02-05 23:09:14 Post No. 50765
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Anonymous 2016-02-05 23:09:14 Post No. 50765 [Report]

any help with this problem, /sci/? I don't even know where to start... Since the mass involved is ever changing, my guess is that I'm supposed to somehow write a conservation of momentum and to find some sort of a link with the elastic force.. To make matters even worse, assumption 4 throws my intuition away, as I can't say if the oscilations will go on forerver or if they're gonna stop
Any help would be appreciated

Anonymous 2016-02-05 23:47:06 Post No.50766
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Anonymous 2016-02-05 23:47:06 Post No.50766 [Report]

>L>>b
That means the mass is not changing enough for it to matter

Gonna take a guess that it's constant
I'm also currently enjoying some diarrhoea so I'm not thinking clearly atm

Anonymous 2016-02-06 07:51:23 Post No.50767
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Anonymous 2016-02-06 07:51:23 Post No.50767 [Report]

>>50766
I think that's supposed to tell that the period of this oscilations is small so you can somehow approximate it with a harmonic oscilator. If the mass would be constant, I don't think it would oscilate. The oscilations are driven by the fact that the new weight of the chain, (L+b)*g*sigma is bigger than the old elastic force for the equilibrium position.