Here’s a question that I’ve wondered about: What’s actually a safe load to put on paracord in case of it slipping and dynamic loading? Paracord should be a shock cord since it was originally for parachutes, but it’s always rated by a static load weight.

Here’s the best I’ve gathered (internet, please correct me if any of this is wrong):

An approximate equation for shock load is: **shock load = weight * ((fall distance / elongation) + 1)**

Properly rated paracord should elongate at minimum 30% (more is better so let’s use 30% as a worst case).

If are you dropping something with the cord, the fall distance is the cord length or 100%. The equation reduces to **weight * (1/0.3 + 1)** or **weight * (13/3)**. A weight being dropped on paracord can generate a shock force of about **4.333 times** it’s weight.

So going in reverse, if we take the static load of paracord as it’s net breaking strength, do not load it with more than the inverse of that factor in weight, 3/13 or **23% of it’s rated strength**.

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