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@bfabry
Created December 3, 2015 18:47
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fall distance = dx above bolt * 2 + excess rope
excess rope = dx you to bolt * 2
fall distance = dx above bolt * 2 + dx you to bolt * 2
dx above bolt = (distance between bolts - dx you to bolt)
dx you to bolt = (distance between bolts - dx above bolt)
— no reachy
dx you to bolt = 0
fall distance = dx above bolt * 2
fall distance = 2 * (distance between bolts - dx you to bolt)
fall distance = 2 * distance between bolts
— reachy
dx above bolt = 0
fall distance = dx you to bolt * 2
fall distance = 2 * (distance between bolts - dx above bolt)
fall distance = 2 * distance between bolts
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bfabry commented Dec 3, 2015

note: the fall distance is the same but in the second case you're starting the fall closer to the ground. this has obvious consequences if the first bolt is 2m off the ground, and the distance between them is 2m.

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