If you have a string being pulled on each end by 60N, what is the total tension in the string?
The Attempt at a Solution
The answer in my textbook says 60N, but it doesn't make a whole lot of sense to me (even though it's obviously right). If you're pulling both ends with 60 Newtons of force, why isn't it 120N of force, total, in the string? Why is it that the tension is only 60N? If one end were tied to a fixed object, and the string was pulled by 60N, then the total tension would also be 60, no? So then do you get the same result from pulling the other end rather than keeping it stationary?
If one end were to pulled by 70N, and the other by 60N, would the total tension be 70?
I find tension fairly confusing, and any help would very much appreciated.