# Period of oscilation [duplicate]

This question already has an answer here:

Two masses $m_1$ and $m_2$ are connected by a spring of spring constant $k$ and slide freely without friction along horizontal track. What is period of oscillation? No force influence.

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Have you tried anything? Can you show us at least a force balance or some effort to get an answer? –  ja72 Apr 25 '13 at 13:59