Moholy-Nagy's Balance Study (1924) reconstructed in 1967 is an example of an exploration of Gestalt principles. You can see Moholy-Nagy's interest in balance and basic line through his use of the circular and rectangular shapes. Something that I also noticed was the negative space within the circles on the top and the bottom of the figure. That space must be considered in the balance as well. Each piece is contributing to the balance of the object as a whole.