A 55-kg hiker starts at an elevation of 1600 m and climbs


A 55-kg hiker starts at an elevation of 1600 m and climbs to the top of a 3100-m peak.

(a) What is the hiker's change in potential energy?

(b) What is the minimum work required of the hiker?

(c) Can the actual work done be more than this? Explain why.

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Physics: A 55-kg hiker starts at an elevation of 1600 m and climbs
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