Figure $3$ is a beam having a circular cross$-$section. The cross$-$section has a diameter of $0\mathrm{.}4$ m $.$ It

is simply supported and loaded as shown below. Use it to answer questions $11$ to $14.$

What is the maximum shear force in the beam?

a$.10$ kN

b$.21$ kN

c$.26$ kN

Determine the maximum bending moment in the beam.

d$.31$ kN

a$.4$ kNm

c$.-20$ kNm

b$.0$ kNm

d$.-56$ kNm

Compute the maximum bending stress in the beam.

a$.636\mathrm{.}619kN{m}^{-2}$

c$.-3183\mathrm{.}099kN{m}^{-2}$

b$.0kN{m}^{-2}$

d$.-8912\mathrm{.}676kN{m}^{-2}$

The point of inflection in the beam is