Uhhhhhhhhm the Flash thing is builted in by our Host!
The points about 1x and 2x are apt, thanx.
But, this example goes on beyond that, you inverse it for forces on a speed line (kinda) and also swigging/ sweating purchase from a line. In these cases, we look at the calcs from the perspective of what was the load we placed on the end, to be generated by the number calculated on the pulley etc.
Also, as we go to larger systems, and these base numbers become part of a string of multipliers, then we knead more accuracy IMLHO. So, 2x isn't too bad pulled from end by load. But, 6x in center then multiplied by impacts, then leveraged by something else becomes a stranger beast, that it is best to have the basics down.
The ropes only resist in 1 direction, on 1 axis (inline). So, we only worry about the inline forces given by cosine of the angle of deflection (from inline). So, is less complicated a starting point than trees and hinges, that resist (therefore empower) forces on across axes, so then we have to use not only cosine, but also sine and length to view their secrets!
Playing with the nums can be kinda fun, but the biggest thing is getting a feel for the patterns-and fer dat i think ya kinda gotta pay your dues and do your homewerk!, and when changes of inputs can have the most dynamic effect, and is that effect standing on your side or against ye!
Orrrrrrrr sumetine like dat, i think!