- #1
ubergewehr273
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- TL;DR Summary
- Paper is rolled into a tube and it unwinds in jerks. Why is it so?
I came across a problem regarding a paper being rolled into a tube. When a piece of paper is rolled into a tube and then left to unwind, it is always seen that the unwinding happens in jerks and not smoothly. Why is it so?
What I have thought (and thanks to some discussions on reddit), that when one rolls a paper into a tube, creases form along the surface which in essence prevent the tube from unwinding smoothly. Potential energy gets stored and is released all at once when the force of friction due to the crease is overcome. This happens in intervals.
I would be glad if someone could correct me on this one and provide some further explanation on this phenomenon.
What I have thought (and thanks to some discussions on reddit), that when one rolls a paper into a tube, creases form along the surface which in essence prevent the tube from unwinding smoothly. Potential energy gets stored and is released all at once when the force of friction due to the crease is overcome. This happens in intervals.
I would be glad if someone could correct me on this one and provide some further explanation on this phenomenon.