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2. A firefighter decides to show off by sliding down the pole by their hands only without gloves. Assume their weight is 667 N and, starting at rest, they slide 3.1 m down a vertical pole, finishing with speed 2.3 m/s. The coefficient of kinetic friction between their hands and the pole is 0.10. (a) How much energy is transferred to thermal energy of the firefighter-pole system? (b) 10 J /cm2 is the typical onset for 2nd degree burns for exposure of a few seconds. Will the firefighter receive a painful burn on their hands (explain with estimated calculations)? (c) What is the magnitude of the kinetic friction force exerted by the pole on the firefighter?

2. A firefighter decides to show off by sliding down the pole by their hands only without gloves. Assume their weight is 667 N and, starting at rest, they slide 3.1 m down a vertical pole, finishing with speed 2.3 m/s. The coefficient of kinetic friction between their hands and the pole is 0.10. (a) How much energy is transferred to thermal energy of the firefighter-pole system? (b) 10 J /cm2 is the typical onset for 2nd degree burns for exposure of a few seconds. Will the firefighter receive a painful burn on their hands (explain with estimated calculations)? (c) What is the magnitude of the kinetic friction force exerted by the pole on the firefighter?

College Physics
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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2. A firefighter decides to show off by sliding down the pole by their hands only without gloves. Assume their weight is 667 N and, starting at rest, they slide 3.1 m down a vertical pole, finishing with speed 2.3 m/s. The coefficient of kinetic friction between their hands and the pole is 0.10. (a) How much energy is transferred to thermal energy of the firefighter-pole system? (b) 10 J /cm2 is the typical onset for 2nd degree burns for exposure of a few seconds. Will the firefighter receive a painful burn on their hands (explain with estimated calculations)? (c) What is the magnitude of the kinetic friction force exerted by the pole on the firefighter?
Transcribed Image Text:2. A firefighter decides to show off by sliding down the pole by their hands only without gloves. Assume their weight is 667 N and, starting at rest, they slide 3.1 m down a vertical pole, finishing with speed 2.3 m/s. The coefficient of kinetic friction between their hands and the pole is 0.10. (a) How much energy is transferred to thermal energy of the firefighter-pole system? (b) 10 J /cm2 is the typical onset for 2nd degree burns for exposure of a few seconds. Will the firefighter receive a painful burn on their hands (explain with estimated calculations)? (c) What is the magnitude of the kinetic friction force exerted by the pole on the firefighter?
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