Problem # $7(20$ points$)$

The beam with square cross$-$section is fixed at the left end and subjected to the two forces shown. Referring to the stresses at the shown section, indicate whether each of the following statements is TRUE or FALSE:

a$)$ The shear stress at point $B$ is equal to $250$ kPa $.$

TRUE

false

b$)$ The normal stress at point B is $2\mathrm{.}5$ MPa $.$

TRUE

false

c$)$ The shear stress at point A is greater that $100$ kPa $.$

true

FALSE

d$)$ The maximum normal stress will be at point $C.$

true

FALSE

Crosssection