#11.46 A 68 kg hiker walks at 5.0 km/h up a 8% slope. The indicated incline is t

Question

#11.46

A 68 kg hiker walks at 5.0 km/h up a 8% slope. The indicated incline is the ratio of the vertical distance and the horizontal distance expressed as pecentage.

What is the necessary metabolic power? Hint: You can model her power needs as the sum of the380 W power to walk on level ground plus the power needed to raise her body by the appropriate amount. Assume that the efficiency of the body in using energy is 25%.

Express your answer to two significant figures and include the appropriate units.

W

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W

Explanation / Answer

8% slope: ? = arctan(0.08) = 4.57

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