What do you mean?
BTW did you understand this problem?
One more time for ...
A rolling ring(chain of n element)on surface.
One of this element all the time has value of linear velocity ZERO at surface point(READ physic BOOK)
When ring stop, just n-1 elemet has a linear velocity more then zero.
For better undestandig chain is broken at this moment.
The question is: would this chain contain a linear momentum is equal to initial ring momentum?

P.S.
There is no reason create a post and say "I don't know".
The wolrd find out answer.