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PROBLEMS The pin-connected structure is loaded as wn in Figure 5. Bar CD is rigid, and is horizontal before load P is applied. Bar A is made of alumimm 0:- 75 GPa, cross-sectional area-1000 mm2 Bar Bis made of structural steel (E-200 GPa, cross sectional area- 500 20m P150N (a) (15 points) Draw the free body diagram for bar CD, and write down (but do not solve) the equations of static equilibrium for the stracture. (b) (5 points) Is it statically determinate? (e) Q5 point) o If you determine that it is statically determinatc, solve for the stresses in bars A and B, and the (Gi) If you determine that it is NOT statically determinate, solve for the stresses in bars A and B, and the vertical displacement of point D
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