Each of the AB and CD links are made of aluminum (E = 10,900,000 psi) and have a cross-sectional area of 0.4 in 2. Knowing that they support RIGID element BC, determine the deflection of point E.

Question 6* Each member of the truss shown is made of steel and has the cross-sectional area of 400mm². Use Castigliano's theorem to determine the vertical and horizontal deflections of joint A. P = 3 KN E = 200 GPa A VP m F 2.5 kN 1 m. E B -1 m. D 1 m

Consider the beam and loading shown. Knowing that d = 1.37 in. and E= 29 × 106 psi, determine the magnitude and location of the largest downward deflection. (Round the final answers to three decimal places.) 24 in. B 10 lb/in. 16 in. 48 in. 200 lb D -8 in. d The location of the largest downward deflection is xm The magnitude of the largest downward deflection is in. in. I.

A compression member of 1.5-m effective length consists of a solid 30-mm-diameter brass rod. In order to reduce the weight of the member by 25%, the solid rod is replaced by a hollow rod of the cross section shown. 15 mm Determine (a) the percent reduction in the critical load, (b) the value of the critical load for the hollow rod. Use E = 200 GPa. 30 mm 30 mm