Dats

$2.$

$P_1=250kN$

$P_2=350kN$

$L_1=110mm$

$L_2=135mm$

$L_3=160mm$

$A_1=2500m{m}^2$

$A_2=3500m{m}^2$

$A_3=4500m{m}^2$

$E_1=200000$MPa

$E_2=200000$MPa

$E_3=200000$MPa

Statically indeterminate structure, find reactions, calculate axial stress at each segment and elongation$/$compression at each segment.