VI$.$ For the given simple truss shown in Figure $5$ below,

a$)$ Show that it is both externally and internally statically determinate.

b$)$ Determine the external reactions at A and $H.$

$[3$ marks$]$

c$)$ Calculate the forces in members $AB,AM,BC,BM$ and $CK$ using the method

of joints.

$[12$ marks$]$

d$)$ Find the forces in members DE$,$ DJ and LN using the method of sections.

$[8$ marks$]$

Note that you are required to draw all relevant Free Body Diagrams when you

answer the sub$-$questions b$)$ to d$).$

Note: All the angles in the diagram are either $45$ or $90$