Hi Guys, First post here. I'm in a debate with my friend who happens to be a climbing buddy. Dynamic ropes for climbing & abseiling come in two standard sizes, 50 and 60 Meters. The point being debated is weather or not the 60 meter rope has to be stronger than it's 50 meter counterpart in order to hold the same weight at the end. These ropes (being dynamic) have a little stretch like a bungee cord so you can fall with them. I assume that they are a little thinner when stretched. I know the difference between 50 & 60 M isn't great, but let's assume the difference is 5 Kilometers, and the rope itself weighs nothing. Thanks, Art.