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What is the work produced by a hiker of mass 82 kg carrying a backpack of mass 15 kg to reach the top of mount Kilimanjaro at an elevation of 5,895 m. (earth gravity is g-9.81 m-s2)

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Answer #1

work produced = gravitational energy

= mgh

where m = mass

g = acceleration due to gravity

h = height

W = (82 + 15) *9.8*5895

= 5603787 J

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