Two rock climbers, Jim and Karen, use safety
Chapter 4, Problem 4.85(choose chapter or problem)
Two rock climbers, Jim and Karen, use safety ropes of similar length. Karen’s rope is more elastic, called a dynamic rope by climbers. Jim has a static rope, not recommended for safety purposes in pro climbing. (a) Karen (Fig. 4–71) falls freely about 2.0 m and then the rope stops her over a distance of 1.0 m. Estimate how large a force (assume constant) she will feel from the rope. (Express the result in multiples of her weight.) (b) In a similar fall, Jim’s rope stretches by only 30 cm. How many times his weight will the rope pull on him? Which climber is more likely to be hurt?
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