The truss shown is supported by a pin at A and a roller at $B.$ It is subjected to two vertical forces at joints $C$ and $H.$

Use $(+)$ sign for tension members and $(-)$ sign for compression members.

$F=1160N,P=3480N,a=1m$

a$.$ Determine the reaction at joint $B$

$Bx=$

N

b$.$ Determine the reactions at joint $A.$

Ax N

$Ay=$ N

c$.$ Determine the axial force in members IJ$,$ FG$,$ FJ

$F_{1,1}=$

$F_{RG}=$

$f_n=$