QUESTION $2$

$[30$ MARKS$]$

For the truss in Figure q$2$ below, using the stiffness method, determine the displacements in joint $1,$ and member forces of members $1$ and $2$ only. The joints are indicated by numbers in circles, whereas the members are indicated by numbers in squares. All connections are pins$/$joints$.$ All members have similar properties as follows: $A=4000m{m}^2$ and $E=200$GPa.

FIGURE Q$2$