The pin$-$jointed truss has a roller support at A and a hinge support at $J.$ It is subject to five point

loads as shown in the diagram.

$($i$)$ Calculate the support reaction components $(R_A,R_J$ and $\{$:$H_J)$

$($ii$)$ Calculate the magnitude and the sense of the member forces $AB$ and $AC$ using joint

resolution.

$($iii$)$ Compute the forces in bars DF and DE of the scissors truss using method of sections.