1. The problem statement, all variables and given/known data http://screencast.com/t/ZTk3NDUxNjU I need help with understanding number 18. 2. Relevant equations Center of mase formula: m1x1+m2x2/(all masses) 3. The attempt at a solution How do you tell if adding the weight will make the truck tipover. I calculated that the center of mass would shift to 1.75m from where the load was added. Or .25 m from the axle. (axle 1)+(axle 2)/(the whole mass of the system) 2000*4.5+8000*1.5/12000=1.75m from where the new load was added.