1. The problem statement, all variables and given/known data Three children are trying to balance on a seesaw, which includes a fulcrum rock acting as a pivot at the center (x = 0), and a very light board 5.2 m long (see figure). Two playmates are already on either end. Boy A has a mass of 50 kg, and boy B a mass of 35 kg. Where should girl C, whose mass is 25 kg, place herself so as to balance the seesaw? http://www.webassign.net/gianpse4/12-57.gif 2. Relevant equations 3. The attempt at a solution (45kg)(9.8m/s^2)(-2.6m)-(35kg)(9.8m/s^2)(2.6m)+(25kg)(9.8m/s^2)(x) -1146.6N*m-891.8N*m+245N(x) -2038.4N*m=-245N(x) x=8.32m which is clearly not correct....please help!