Problem $31.($L$.$O$.3\mathrm{.}3\mathrm{.}2$; $3\mathrm{.}4\mathrm{.}3)$

$($Hibbeler$,2015)$

a$.$ Identify all zero force members.

b$.$ Determine the force in members $\backslash ($ F E$,$ F I $\backslash ),$ and $\backslash ($ H I $\backslash )$ :

i$.$ using the method of joints.

ii$.$ using the method of sections.

c$.$ Determine the force in member EC using either the method of joints or the method of sections.

Remember to state whether the members are in tension or compression.

Hint: Remember to solve for the external reactions at the pin and roller first.