II$.$ Problems

$(30$ points$)$ For the truss shown, the supported

loads are $F_1=8kN$ and $F_2=3kN.$

a$.$ calculate the reactions at A and $C,$

b$.$ using the method of joints, determine the

forces in all truss members.

Be sure to indicate tension or compression for $($

each solved truss member.

For $5$ points extra credit: Use the method of

sections, determine the force in members $AB,BD,$

and $DE.$