What is the potential difference between xi=2.0m and xf=3.0m?

Explanation:

To find the potential difference between and , we just need to observe which vertical coordinates belong to these given values.

From the graph, we observe that correspond to , because they form the point which is given in the graph.

With the same reasoning, we observe that corresponds to , because they both together form the points .

Now, the potential difference between the given distances, we just need to subtract

Which also refers to the variation of the potential.

Therefore, the potential differential is

the body's situation won't change the forces are equal opposit and on the same body

pe = weightxheight = 2000x1000=2,000,000joules