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Fig. 2. The solid line shows the form of Eqn
5, which indicates the effect of breaking strain on the minimum
static safety factor required for bungee jumping. The gray shaded area below
the solid line represents strain–safety factor combinations that would
fail during bungee jumping. For example, a strand of Kevlar would require a
static safety factor of at least 58, while natural rubber would only need a
static safety factor of approximately 3 to survive a bungee jump.