Problem $2\mathrm{.}9$

The frame shown is loaded by a vertical force

$P=245kN$ in point B $.$ The cross sectional areas

are $2500m{m}^2$ and $1800m{m}^2$ for trusses AB and

AD$.$ All trusses are made of structural steel with

elastic modulus $E=210$GPa. The frame is of

height $h=3m$ and length $l=10m.$

For all members in the frame, determine a$)$ the

internal forces, b$)$ the deformations, c$)$ the

normal stresses