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An exercise machine indicates that you have worked off 2.5
Chapter 16, Problem 27P(choose chapter or problem)
QUESTION:
Problem 27P
An exercise machine indicates that you have worked off 2.5 Calories in a minute-and-a-half of running in place. What was your power output during this time? Give your answer in both watts and horsepower.
Questions & Answers
QUESTION:
Problem 27P
An exercise machine indicates that you have worked off 2.5 Calories in a minute-and-a-half of running in place. What was your power output during this time? Give your answer in both watts and horsepower.
ANSWER:
Step 1 of 3:
Our aim is to find the power output of the person in watts and horsepower.
The work done by the person W = 2.5 cal
The time duration t = 1.5 min = 90 s
1 cal = 4.186 J
1 hp = 746 J/s = 746 watt