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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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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