Totally thought of this already, but friction still exists, along with gravity. If only we could separate them???
Behold! The solution to the world’s energy crisis!
The red boxes, strapped to the conveyor belt, are hollow and float in water. The green wheels are almost frictionless and the valves allow boxes to enter and exit the container on the right without spilling any of the precious fluid it holds.
Question: Should I take out a patent!?
blythemoon 