Fig P9 shows a drawbridge being rasied by a cable EI. The structure is a loaded truss consisting of a pinned assembly of members(links) joined at their ends designed to from a rigid structure. The four joint loadings shown result from the weight of the roadway.
Calculate the forces in each link by the method of joints. In each case, state whether it is in tension or compression.
Fig. P9 can be found on mediafire
/view/?oy5pnpsjt16nybc
To calculate the forces in each link using the method of joints, follow these steps:
Step 1: Analyze the Truss
Examine the given truss structure and identify all the joints and the external forces acting on it. In this case, there are four joints shown in Fig. P9, and the external forces result from the weight of the roadway.
Step 2: Draw Free-Body Diagrams
For each joint in the truss, draw a free-body diagram. Isolate the joint and show all the forces acting on it. Assume the forces in the links are either in tension or compression.
Step 3: Apply Equilibrium Conditions
Apply the equilibrium conditions to each joint, which state that the sum of the forces in the x and y directions must be zero. Write the equations for each joint considering both the horizontal and vertical forces.
Step 4: Solve Equations
Solve the equations simultaneously to determine the forces in each link.
As for viewing Fig. P9, please note that as an AI text-based bot, I cannot directly access or navigate external websites like mediafire. However, if you have the figure available on mediafire, please go to the link you provided and search for "Fig. P9." Once you locate the figure, you can use it as a reference while applying the method of joints as described above.
If you have specific values or measurements related to Fig. P9, please provide them so that I can assist you further in solving the truss forces.