Determine:

$($LO$4$ &LO$5)$

a$)$ The zero$-$force member$($s$)$ if exists, with the reason. $(6$ points$)$

b$)$ The force in each member of the truss and state if the members are in tension $($T$)$ or compression $($C$).$ Give the answers in tabular form. $(40$ points$)$

Use the method of joints

$P_1=60kN,P_2=45kN$