Solving the Puzzle of Chain Energy: Tips & Tricks

[NDave96]

Homework Statement

Can someone help me with this physics excercise?
Calculate the energy of the chain shown in the figure, if the center of gravity (center of mass) of the rollers travel with v speed.The weight of the rollers are negligible, the chain is considered inextensible, but perfectly flexible. The weight of the chain is m.
Thanks in advance.

Relevant Equations

I attached a picture of the other one that we did in class. My biggest problem is that I can't go to physics class, because I have another more important class at the same time.

I don't need the whole answer just a few tips to do it. I think it's something with the two different radiuses, but I'm really bad at this.
We did a similar one in class, but there is a trick in this one that I can't figure out.

 

[Merlin3189]

Deleted due to following post.

 

[haruspex]

It will help to start with a frame of reference that moves at the same velocity v. In this frame, the two wheels just rotate on their own axes.
At what angular velocity do they rotate? So how fast is the chain moving, and what KE does it have?
Then add the KE associated with the linear motion of the system as a whole.