stength of materials

A simply supported beam is 6 ft. long and carries a uniformly distributed downward load of 0.5 kip/in. load. Determine the state of stress at a point on the top surface and show it on a 3D element. Show the bending stress distribution over the whole cross-section. Determine the resultant tensile and compressive forces, and the moment of the couple. Check if the moment of the couple equals the bending moment, in both magnitude and direction.