metnod or sections, we pass an imaginary section through the truss that "cuts" the truss into two parts, each of which must be in equilibrium. Because there are only three equilibrium equations $,$ and $($:${\displaystyle \underset{?}{\overset{?}{}}}{M}_O=0\}$ that can be applied to each part of the truss, we want to "cut" through the truss at a location that passes through no more than three members with unknown forces. This cut must pass through the member$($s$)$ of interest. You also will need to select which part of the truss to use in your analysis. Although both parts will lead to the solution, one part is usually easier to solve. However, for the method of sections to work, it is often necessary to determine the support reactions first. Otherwise, you might have too many unknown$\backslash$end$\{$array$\}]$

Part C Complete previous part$($s$)$

The spacing at a$=5\mathrm{.}2$ m and applied loads P$1=785$ N and P$2=1110$ N