(Solved): Determine the work a hiker must do on a 15.7kg backpack to carry it up a hill of height h=9.00 ...

Determine the work a hiker must do on a $15.7\mathrm{kg}$ backpack to carry it up a hill of height $h=9.00\mathrm{m}$. The hill is not an even slope but rather an irregular curve as in the figure(Figure 1). Express your answer with the appropriate units. Part B Determine also the work done by gravity on the backpack. Express your answer with the appropriate units.