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**1. Homework Statement**

For context, the first question for this diagram asks for the force F on m1 needed to keep m3 at a constant height.

The second question (which I'm struggling with) asks for the acceleration of m1 in the case where the force F=0.

All surfaces are frictionless and I've assumed the rope is massless

**2. Homework Equations**

**3. The Attempt at a Solution**

I'm not sure I even understand the question - are we to find the acceleration of m1 in the case where m3 is at a constant height as in the first part?

If so, how can m1 accelerate if there is no force on it?