Or the real question - how much tension is on the string when strung on the bow? I just took a dip in the mason jar of strings that have gone wrong for this experiment.
In order to figure this out I took 2 old strings and cobbled them together in such a way as to result in the correct length string with a draw weight scale in the middle.
I zeroed the scale and strung it up. The bow is pulling 38lbs at my draw length. I checked this a number of times and adjusted the brace height to see if that made much difference (it did not).
That string actually had 74 lbs of tension on it!!!
Now this is just one data point, but it was higher than I expected!