In lead climbing using a dynamic rope, the fall factor (f) is the ratio of the height (h) a climber falls before the climber's rope begins to stretch and the rope length (L) available to absorb the energy of the fall, f = h L . {\displaystyle f={\frac {h}{L}}.} It is the main factor determining the violence of the forces acting on the climber and the gear.
In lead climbing using a dynamic rope, the fall factor (f) is the ratio of the height (h) a climber falls before the climber's rope begins to stretch and the rope length (L) available to absorb the energy of the fall, f = h L . {\displaystyle f={\frac {h}{L}}.} It is the main factor determining the violence of the forces acting on the climber and the gear.
Source: Wikipedia "Fall factor" · CC BY-SA 4.0
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