Question $1$

$[10/100$ marks$]$

For the truss system illustrated in Fig. $1$ you need to:

Figure $1$

a$)$ Calculate the force in member $CD$ by using the equivalent beam method $($any other method will result in zero marks!$)$

marks$]$

b$)$ Calculate the vertical displacement at $E$

$[4/10$ marks$]$

c$)$ Draw the deformed shape of the system

$[4/10$ marks$]$

At A there is a hinge and at $B$ a simple support

The area of the truss members is $A=100m{m}^{2}d=11\mathrm{.}3mm$ and $E=200$ GPa