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I assume that with different angles to the block, the loads on the rope will remain the same, but the ability to withstand those loads decreases as the angles spread out from the block. Safe working strength denotes only the calculated percentage of tensile strength in direct line with the load.

I guess the locations of the line being attached and pulled from being 180 degrees to the block gives max rope strength? I'm specifically thinking about pulling with a Maasdam puller, or some other device using wire rope. Jogged my memory, Bud, I recall seeing how sling or wire rope strength...

"At all points". That's what I wanted to know. Great, thanks Nick.

Physics is not my strong point. When you use a pulley block, say hang it in a tree that you are pulling, does it increase the load on the rope as effecting the working stress that is being put on it? It seems like at the point where the rope goes around the sheave, the tension is being...