A statically determinate pin jointed frame is shown in Figure $1.$ All members are steel

with an area of $100m{m}^2$ and a Young's modulus of $205k\frac{N}{m}{m}^2.$

a$.$ Calculate the forces in all of the members and illustrate them on a sketch

$(8$ Marks$)$

b$.$ Using the principle of Virtual Work, calculate the horizontal and vertical

deflection at point C when these loads are applied.

$(17$ Marks$)$

Figure $1$