Using both cinservation of energy and conservation of momentum, show that the spring constant k is given by k=2mg/H[1+mg/(m+M)H](adsbygoogle = window.adsbygoogle || []).push({});

I thought that this would go easier if I rewrote the expression for kinetic energy in terms of momentum, but I cant exactly get around figuring the change in momentum to build an equation. would (m1v1/2) be correct?

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# Conservation of energy and conservation of momentum

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