Question $1$: External forces are applied to the system as shown in Figure $1.$ Determine;

$($a$)$ the zero force members, $($e$.$g$.BC)$

$($b$)$ the forces in $ED(F_{ED}),EH(F_{EH}),$ and $GH(F_{GH})$ by taking a cut through them and applying the method of sections, $($use positive for tension and negative for compression as sign convention$)$

$($c$)$ the force in the pin at $E(F_{E_x}$&$F_{E_y})$ using method of joints and results of part b $($take right as positive x direction and up as positive y direction$).$

Note that points will be deducted if you do not use the method of sections and joints in the parts where they are explicitly stated.

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