Predicting weight by calculating area or center of gravity

Simon tried to predict the weight of some of his constructor pieces by calculating their approximate area.

He later also successfully predicted the weight of a binder clip through calculating the ratio of a binder clip to a ruler. Simon did this by observing the center of gravity of the ruler (or center of mass, as “they are very near for objects on Earth because the Earth is very homogenous) as opposed to the center of gravity of the ruler plus binder clip.