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What is the efficiency of a subject on a treadmill who
Chapter 7, Problem 50(choose chapter or problem)
Problem 50PE
What is the efficiency of a subject on a treadmill who puts out work at the rate of 100 W while consuming oxygen at the rate of 2.00 L/min? (Hint: See Table 7.5.)
Questions & Answers
QUESTION:
Problem 50PE
What is the efficiency of a subject on a treadmill who puts out work at the rate of 100 W while consuming oxygen at the rate of 2.00 L/min? (Hint: See Table 7.5.)
ANSWER:
Solution 50PE
We are required to calculate the efficiency of a person using the treadmill under the given condition. Efficiency is the ratio of the input to the output work.
Mathematically,
Step 1 of 2
The rate at which the person consumes oxygen is 2.00 L/min. Table 7.5 says that this rate corresponds to cycling (21 km/h), having an energy consumption rate of 700 W.