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
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?