Given

Young's modulus $E=130$GPa,

forces $F_1=50kN,F_2=90kN,$

Lengths $L_1=260mm$ and $L_2=170mm,$

and cros$-$section areas $A_1=280m{m}^2$ and $A_2=500m{m}^2,$

calculate the internal forces $F_{BC}$ and $F_{AB}$ in kN $,$

the stresses ${}_{BC}$ and ${}_{AB}$ in MPa,

and the total displacement ${}_C$ in mm $.$

Enter your answera in the boxes below.

The answers are acceptable within a tolerance of $1$ kN for the force, $1$ MPa for the stresses, and $0\mathrm{.}01$ mm for the displacement.

Respect the sign convention for tension and compression!

$F_{BC}$:$,kN$

$F_{AB}$:$,kN$

${}_{BC}$:$,$MPa

${}_{AB}$:$,$MPa

${}_C$:$,mm$