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?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 12P: A crate of mass 10.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling...

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