Two rigid bars BCD and EFG are supported by three rods and a pin support as shown in Figure Q$1.$

If the bars are horizontal in position before the load $180$ KN is applied and the rods have diameter

of $12-mm,$ determine

$($a$)$ the deflection of B$,$ C$,$ E$,$ F and G$,$

$($b$)$ the tilting angle of each bar.

Provided that the young modulus of the rods is $184$ GPa and the deformation is assumed to be

elastic.

Figure Q$1$