slt tout le monde :
http://sciencephysique.ifrance.com/tronc%20commun/equilibre%20d%27un%20solide%20sous%20l%27action%20de%20deux%20forces%20exercices.pdf
http://sciencephysique.ifrance.com/tronc%20commun/equilibre%20d%27un%20solide%20sous%20l%27action%20de%20trois%20forces.pdf
http://sciencephysique.ifrance.com/tronc%20commun/cours%20%20equilibre%20d%27un%20solide%20pouvant%20tourner%20autour%20d%27un%20axe%20fixe.pdf