Consider:

$p=568lb,q=473lb$

Use the method of joints AND the method of sections to answer the following questions $($you are required to use both the method of sections and the method of joints in your calculations$)$:

Specify the Zero$-$force members in this truss.

Determine the force in members $ED,AD,$ and $BC$ of this truss.

Put your result for the force in member ED $($in lb$)$ in the cell below. Note that a Positive answer shows a Tension force and a Negative answer shows a Compression Force.

Note: Your uploaded work should cover all the above questions; however, only put the answer to the $3^{rd}$ part, i$.$e$.,$ the force in member ED$,$ in the cell below.