Question

A 75.5-kgkg hiker starts at an elevation of 1200 mm and climbs to the top of a peak 2700 mm high. What is the hiker's change in potential energy? What

is the minimum work required of the hiker? Can the actual work done be greater than this? Can the actual work done be greater than this?

Question image 1Question image 2Question image 3Question image 4Question image 5