Some people, each of mass m = 50 kg, walk around a construction site. What is the gravitational potential energy of a person standing at each location?
location GPE ------------------------------ A B C E F G ------------------------------
Suppose that a person walks from one location to another. How does his GPE change? What is the component of the gravitational force acting with (+) or against (-) his motion?
change in component of grav
from to GPE (J) force (N)
----------------------------------------------------
B C
E F
C E
----------------------------------------------------