PROBLEM 3. The aluminum rod has a solid circular cross-section and supports the loading shown. Drawing the normal force diagram and keeping the weight minimum, determine the diameter of the rod at each segment AB, BC, CD and DE. Compare the weight of the rod if the magnesium alloy AZ91D was used as the rod material. 4 kN 6 kN 2 kN -2 m--2m- -2 m

Determine the force in each member of the loaded truss. The forces are positive if in tension, negative if in compression. Part 1 B AD 50° CD AD = Correct Answers: CD= 3.1 m The Free-Body diagram for joint Dis drawn assuming that all internal forces are in tension. Solve for the forces in AD and CD. The forces are positive if in tension, negative if in compression. 50% 50 6.2 m -3020.7586 3600 N 4699.4662 D 50° D N 3600 N N