Q$1.$ Analyse the truss shown below using the method of joints to determine the force in each member and indicate whether it is in tension or compression. Q$2.$With the materials data given calculate the factor of safety $($F$.$O$.$S$)(3$mm balsa used on the inside members and $5$mm on the outside$)$ between $1$ and $3.$ the truss structure should fail when a $1\mathrm{.}5$kg load is applied to the critical location.