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It is well known the method of determining the center of mass of a triangularpiece in which it is hanged from each one of its vertices while drawing fromthe vertice its verticals. The intersection of the three verticals isconsidered as the center of mass, verified by equilibrating the piece over apoint object. But not everybody knows that the method was developed byArquimedes 2,300 years ago, determining the geometrical elements to the mediansof the triangle. He demonstrated theoretically its result and, inspired on hisdemonstration we developed another one, which lends to the ideia and methods ofthe differential and integral calculus.

Determina\c{c}\~ao do centro de massa de uma pe\c{c}a triangular por meio de parti\c{c}\~oes a partir da mediana