[EIDXA] Forces

[Glenn Johnson]

Static (Low elongation) ropes are not recommended by the UIAA (Union
Internationale des Associations d'Alpinisme) for catching falls. Dynamic
ropes are rated for this kind of use. Dynamic ropes have stretch which slows
the fall before the stop. However UIAA certified ropes do not meet OSHA
standards.

Good climbing harnesses/lanyards contain devices to decelerate a falling
body. This is to prevent high forces on either the rope or the person.

Experts will correct me, but it seems that if the rope has zero stretch
(never true) that means the falling body is stopped instantly which means an
infinite G force. Like hitting a rock.

David K0LUM

 

 

Dave is correct!



Orthopedics Biomechanics 101: