When jogging at 13 km/h on a level surface, a 70- kg man uses energy at a rate of approximately 850 W. Using the facts that the “human engine" is approximately 25% efficient, determine the rate at which this man uses energy when jogging up a 5.0° slope at this same speed. Assume that the frictional retarding force is the same in both cases.
When jogging at 13 km/h on a level surface, a 70- kg man uses energy at a rate of approximately 850 W. Using the facts that the “human engine" is approximately 25% efficient, determine the rate at which this man uses energy when jogging up a 5.0° slope at this same speed. Assume that the frictional retarding force is the same in both cases.
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![When jogging at 13 km/h on a level surface, a 70-
kg man uses energy at a rate of approximately
850 W. Using the facts that the “human engine" is
approximately 25% efficient, determine the rate
at which this man uses energy when jogging up a
5.0° slope at this same speed. Assume that the
frictional retarding force is the same in both
cases.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2a69b865-193b-4dbd-bb6e-5cd1b0c351dc%2F5b51a57e-95c6-4dd7-894f-4a445f5a3dd7%2Fzzstj19_processed.jpeg&w=3840&q=75)
Transcribed Image Text:When jogging at 13 km/h on a level surface, a 70-
kg man uses energy at a rate of approximately
850 W. Using the facts that the “human engine" is
approximately 25% efficient, determine the rate
at which this man uses energy when jogging up a
5.0° slope at this same speed. Assume that the
frictional retarding force is the same in both
cases.
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