A person trying to loose weight by burning fat lifts a mass 10 kg upto 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 107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.
A person trying to loose weight by burning fat lifts a mass 10 kg upto 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 107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.
Related questions
Question
Transcribed Image Text:5. A person trying to loose weight by burning fat lifts a mass of
10 kg upto 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
3.8×107 J of energy per kg which is converted to
mechanical energy with a 20% efficiency rate.
(Take, g = 9.8 ms -²)
(a) 2.45 × 10-³ kg
(c) 9.89 × 10-3 kg
mong binowog-br
(b) 6.45 × 10-³ kg
(d) 12.89 x 10-³ kgolo
JIO
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
