A wooden cube with a volume of 
is raised from the ground by 
, and an aluminum cube is raised from the ground by 
. The specific weight of the wood from which the wooden cube is made is 
, and the specific weight of aluminum is 
.
Calculate the weight of the wooden cube.
Calculate the potential energy of the wooden cube.
What is the mass of the aluminum cube if the cubes have the same potential energy with respect to the ground?
