Model:

Create the structure shown above using applicator sticks for members and glue for the joints $($in $1"=1\text{'}-0"$ scale$)$

The structure you have created is unstable and will need exactly four correctly placed $5$ ft diagonal members to make the structure a stable and determinate truss.

Through trial and error, create a stable truss using these four diagonal pieces. You can also check Handout Course Pack placed on Polylearn that explains how to build a stable truss. After verifying your solution with your instructor, sketch these diagonals on the drawing above

Model the hinge by two short links normal to each other and the roller by one short link. Calculations:

Compute the reaction forces at the hinge and roller. Using the method of joints for a truss, compute the force in each truss member caused by the two loads shown on the figure above. Show all work to include FBDs of all joints on separate sheets of paper. The final joint will be a statics check.

Indicate the magnitude of the forces on each member on the figure above. Specify if the member is in tension $($T$)$ or compression $($C$).$