Originally Posted by nemier
Over simplifying it, every time the line passes over a set of pulley's, you will half the load.
Certainly that's not the case, since then mechanical advantage would always be a factor of two.
Anyway I guess it makes sense that blocks would be marked with their SWL or whatever, but I'm wondering what happens when I mix and match things and combine them in clever ways. For example, what do you think about the soft shackle problem? The original line's breaking strength was listed, but I'm trying to understand when, in this case, I double the line up twice.