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In a hot day’s race, a bicyclist consumes 8.0 L of water

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 27P Chapter 14

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 27P

Problem 27P

In a hot day’s race, a bicyclist consumes 8.0 L of water over the span of four hours. Making the approximation that all of the cyclist’s energy goes into evaporating this water as sweat, how much energy in kcal did the rider use during the ride? (Since the efficiency of the rider is only about 20%, most of the energy consumed does go to heat, so our approximation is not far off.)

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SolutionConsider the pendulum has some small angle oscillation,in this case pendulum undergosimple harmonic motion.the time periods of the pendulum on the moon and on the earth are T earth 2 earthearth and Tmoon = 2L moon/gmoonHere consider T = T earth moon 2L earthgearth 2 moongmoon Lmoon= (g moongearthLearth =(1.62 m/s /9.8 m/s )(2.00 m) =33.1 cmAcceleration due to gravity on moon is smaller,a smaller pendulum length have same periodon the earth.

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Chapter 14, Problem 27P is Solved
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Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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In a hot day’s race, a bicyclist consumes 8.0 L of water