Q3:
A speck of dust with a mass of 0.22 g
is at a distance of 1,250 m
from a tiny shard of ice that has a mass of 1.5 g.
Both of the objects are located in deep space,
extremely far away from any stars or other objects of any kind.
The gravitational force that the objects exert on each other is negligible,
as is the gravitational force on either the speck of dust or on the shard of ice from any other objects.
What is the gravitational potential energy of the speck of dust?
What is the gravitational potential energy of the shard of ice?