The purpose of the present work is to describe the more important aspects and results of one of the most popular alternatives to the Newtonian theory of motion: the MOND theory. In order to explain one of the success of this theory I study the curve rotation of galaxies with Newtonian theory and MOND theory. The results obtained are confronted against the observational data from galaxy UGC4329 from Cancer cluster.
Newtonian mechanics; MOND; modified mechanics
