A horizontal bridge of length L = 70.0 m and mass m_bridge = 1.00 * 10^6 kg is supported at its ends. The bridge is symmetric and its mass is uniformly distributed. Vehicle A of mass m_A = 1.50*10^4 kg is at a distance of 10.0 m from one end of the bridge, and vehicle B of mass mB = 3.00*10^4 kg is at a distance of 10.0m from the other end of the bridge. What are the 5 forces acting on the bridge