Final Answer:
CD: Tension force of 4 kN, CE: Compression force of 6 kN.
Explanation:
To find the forces in members CD and CE using the method of sections, after determining the support reactions, the analysis involves isolating the desired section and applying equilibrium equations to solve for the internal forces. For member CD, a section is taken that cuts through CD, isolating it from the rest of the structure.
Applying equilibrium equations to this section, we find CD in tension with a force of 4 kN. Moving on to member CE, a section is chosen that cuts through CE, separating it from the rest of the structure. Solving the equilibrium equations for this section reveals CE in compression with a force of 6 kN. These forces indicate the nature (tension or compression) and magnitude of the internal forces within the specified members.
This method enables the determination of internal forces within specific members of a structure by isolating the section containing the member of interest and solving for the forces using equilibrium equations. Taking advantage of the known support reactions simplifies the calculation process, allowing for a focused analysis of individual members within the larger structure.