Answer:
Its gravity potential energy is 39,240 J
Step-by-step explanation:
The gravity potential energy of a body on the earth's surface is the energy a body under the influence of gravity possesses by virtue of its elevation from the surface of the earth.
We can calculate the GPE using this formula

from the problem given, we have m= mass= 20 kg
g = gravitational constant = 9.81m/s2
height = 200m

Hence, Its gravity potential energy is 39,240 J