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. Take g= 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. Take g= 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
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter9: Solids And Fluids
Section: Chapter Questions
Problem 2WUE: Physics Review A team of huskies performs 7 440 J of work on a loaded sled of mass 124 kg, drawing...
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