(Solved): STRUTRACTURAL MECHANICS   PLEASE HELP ME!!! I LEFT 1HOUR Consider the truss structure in Fig ...

STRUTRACTURAL MECHANICS

 

PLEASE HELP ME!!!

I LEFT 1HOUR

Consider the truss structure in Fig Q5. All members have axial stiffness \( A E=10^{6} \mathrm{~N} \) a. Calculate the degree of indeterminacy. State whether the frame is internally or externally indeterminate. [3 Marks] b. Using Castigliano's \( 2^{\text {nd }} \) theorem, calculate the load in member AD. [19 Marks] c. If the horizontal constraint at \( \mathrm{B} \) is relaxed, calculate the new load in member AD (hint: make use of your previous analyses). [3 Marks] (TOTAL 25 MARKS) rig 2 - A IUdued unss siruciure.