The problem involves calculating the force at the left point of support on a bridge, given its length, mass, and the position of a truck on it. The subject area pertains to statics and equilibrium in physics.
The discussion is ongoing, with participants offering suggestions to clarify the approach, particularly regarding the identification of forces and the selection of a pivot point for torque analysis. There is no explicit consensus yet on the method to be used.
Participants note that the original poster may not have identified all relevant forces, which could affect their calculations. There is an emphasis on the importance of the choice of axis in the analysis.
First identify all the forces acting on the bridge. Then show us exactly how you calculated the torques. (What point did you use as your pivot point?)kitty9035 said: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!