1. The problem statement, all variables and given/known data A bridge of length 60 m and mass 51800 kg is supported at each end. A truck of mass 45000 kg is located 26 m from the left end. 2. Relevant equations What is the force on the bridge at the left point of support? 3. The attempt at a solution I know your supposed to use the sum of the forces equals zero. Then the sum of the torques equal zero, but i can't get the right answer!!