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## Homework Statement

A rock climber of mass 92.1 kg starts at the base of a cliff and climbs to the top (h = 33.8 m). He then walks along the plateau at the top for a distance of L = 289.9 m.

(a) Find the work done by gravity.

(b) What is the change in the gravitational potential energy of the rock climber.

## Homework Equations

Im still learning this stuff and am clueless thus far.

## The Attempt at a Solution

This is why i need help..

THANKS!