At final, it will stop moving, so there will not be any kinetic friction, it will be static friction I guess. But the only given quantity is about coefficient of kinetic friction so that when I try to use "Force equality" it gives me a wrong answer.
Hello, I am new on this forum, so if I make any mistakes please inform me. Thank you.
I wonder why I cannot use forces instead of energy conservation in this question.
The question is:
"How far (x = L) does the spring stretch before the masses stop moving? Express your answer in terms of m, k...