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Newton's cradle height problem
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[QUOTE="Dinheiro, post: 4820752, member: 507955"] But if you derivate with respect to n, you get 2n³ + (M+m-1)n² - (M+m)n - Mm = 0 probably, three roots, one of them might get H to max. The problem is to find these roots. By the way, this problem is from a test which you should take 8 minutes each question: there must be a better way to solve it. [/QUOTE]
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Newton's cradle height problem
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