What is the force or energy involved in rolling a piece of material?

Question

when we roll a piece of material,for instance, paper or plastic, it rolls back. What is the force or energy involved? Is there any scientific theory behind such phenomenon?

Answer 1

???
I'm honestly not sure I understand what you're asking. If you mean rolling something across a flat surface, it won't 'roll back' unless some other force is acting on it.
If you mean 'uncurling' a piece of paper or plastic that has been 'rolled up', then that's a phenomena known as 'set'.

Doug

Answer 2

well this is fairly simple in the main..............
there is a tension in the skin of the material and this gets converted to potential energy just like a spring and this energy is utilized to bring the material back to its original state until the tension becomes zero..............