Two rock climbers, Jim and Karen, use safety ropes of simi- lar 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? FIGURE 4–71 Problem 85.

Two rock climbers, Jim and Karen, use safety ropes of simi- lar 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? FIGURE 4–71 Problem 85.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Two rock climbers, Jim and Karen, use safety ropes of simi-
lar 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?
FIGURE 4–71
Problem 85.

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