Q1: Classify each of the structures as statically determinate, statically indeterminate, stable, or unstable. If indeterminate, specify the degree of indeterminacy. The supports or connections are to be assumed as stated.

The asymmetric simple truss is loaded as shown. Determine the reactions at A and D. Neglect the weight of the structure compared with the applied loads. Is the knowledge of the size of the structure necessary? 1L 60° Answers: Ay = i Dy= Dx= i i B 3L 60° 60° E y 1 1L L L L 30° x 4L D

All two-force members of the loaded structure are of the same length. Member BCD is a rigid beam. Determine the forces in members BG and CG. The forces are positive if in tension, negative if in compression. A Answers: BG= CG = i i B G L L L E

From the following armor, determine the following: Reactions in A and F. The internal forces at node C. (Indicate whether the forces are in compression or tension.)  The internal forces in the elements CH, CD and HI. (Indicate if the forces are in compression (C) or tension (T)). Draw the respective free-body diagrams. Consider the following:  A and F are supports. the angles a, B, y are angles of 90, 60 and 30 ° respectively (Check image pr2 for the image of the armor) (Check image pr2.2 for the values to be used)