Stretch in DYNAMIC kernmantle?

Stretch in DYNAMIC kernmantle?

• A. 60%
• B. 20%
• C. 40%
• D. 80%

Answer: (A)

Dynamic kernmantle rope is designed to elongate significantly when loaded in order to absorb the energy of a fall. That stretch helps reduce peak forces transmitted to the climber and the anchors. In typical dynamic ropes, elongation under dynamic loading can be substantial—around sixty percent of the rope’s original length in many testing and training references. This level of stretch reflects the rope’s purpose: to absorb energy by lengthening rather than transferring it all abruptly. The other percentages describe less energy-absorbing scenarios (twenty or forty percent) or are unrealistically high for standard dynamic ropes (eighty percent). So the figure that best represents this energy-absorbing behavior is about sixty percent.

Dynamic kernmantle rope is designed to elongate significantly when loaded in order to absorb the energy of a fall. That stretch helps reduce peak forces transmitted to the climber and the anchors. In typical dynamic ropes, elongation under dynamic loading can be substantial—around sixty percent of the rope’s original length in many testing and training references. This level of stretch reflects the rope’s purpose: to absorb energy by lengthening rather than transferring it all abruptly. The other percentages describe less energy-absorbing scenarios (twenty or forty percent) or are unrealistically high for standard dynamic ropes (eighty percent). So the figure that best represents this energy-absorbing behavior is about sixty percent.