For problems P$9\mathrm{.}1$ through P$9\mathrm{.}4,$ a beam segment subjected 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 magnitudes of key bending stresses on the sketch.

$($b$)$ determine the resultant forces acting in the $x$ direction on the specified area at sections A and $B,$ and

show these resultant forces on the sketch.

$($c$)$ determine the horizontal force required to satisfy equilibrium for the specified area and show the

location and direction of this force on the sketch.

P$9\mathrm{.}3$ The beam segment shown in Figure P$9\mathrm{.}3$a$/4$a is subjected to internal bending moments of $M_A=$

$-9\mathrm{.}2kN*m$ and $M_B=-34\mathrm{.}6kN*m.$ The segment length is $x=300mm.$ Consider area $(1)$ shown in

Figure P$9\mathrm{.}3$b$/4$b$,$ and use cross$-$sectional dimensions of $b_1=250mm,d_1=15mm,b_2=10mm,d_2=370$

$mm,b_3=150mm,$ and $d_0=15mm$

FIGURE P$9\mathrm{.}3$b$/4$b Cross section.