4. For the following problems, a beam segment subected to Internal bending moments at sections A and B is shown along with a sketch of the cross-sectional dimensions. For each problem: (a) Sketch a side view of the beam segment and plot the distribution of bending stresses acting at sections A and B. Indicate the magnitude of key bending stresses on the sketch (b) Determine the resultant forces acting in the direction on the specified area at sections A and B and show these resultant forces on the sketch () is the specified area in equilibrium with respect to forces acting in the direction? Ir not, determine the horizontal force required to satisfy equilibrium for the specified area and show the location and direction of this force on the sketch. Consider area (1) of the 18-in.-long beam segment, which is sublected to internal bending moments of MA 29 and MB-23 2 in 42 kp- Sin 2 36 kipi 2. 10 in Fig. 3a Beam segment Fig 3b Cross-sectional dimensions