09: A person trying to lose weight by burning fat lifts a mass of 10 kg up to a height of 1 m 1000 times. Assume that the potential energy lost each time he lowers the mass is dissipated. How much fat will he use up considering the work done only when the weight is lifted up? Fat supplies 3.8 X 10 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate. Takeg= 9.8 m/s (a) 12.89 X 10 kg (b) 2.45 X 10 kg (c) 6.45 X 10 kg (d) 9.89 X 10 kg

09: A person trying to lose weight by burning fat lifts a mass of 10 kg up to a height of 1 m 1000 times. Assume that the potential energy lost each time he lowers the mass is dissipated. How much fat will he use up considering the work done only when the weight is lifted up? Fat supplies 3.8 X 10 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate. Takeg= 9.8 m/s (a) 12.89 X 10 kg (b) 2.45 X 10 kg (c) 6.45 X 10 kg (d) 9.89 X 10 kg

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter4: Work And Energy

Section: Chapter Questions

Problem KM

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