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**1. Homework Statement**

Two blocks of mass M2 and M1 (M2>M1) are connected by a spring with force constant k and are free to slide on a frictionless table. They are pulled apart and then released from rest. In terms of M1, M2, and k, what would the period of oscillation be?

**2. Homework Equations**

T=2PI*sqrt(m/k)

f=-kx

**3. The Attempt at a Solution**

So taking the starting position to be both blocks just before they released, one full cycle would be when they have both returned to their initial positions. Other than noting this, the problem leaves me perplexed as to what to do next..all I need is a hint in the right direction. I guess just picturing such an apparatus in my head is mind-boggling. Would the equilibrium point remain the same or would it start to expand and contract abnormally?