Problem 1b.1 The compound beam has fixed supports at A and D as well as an internal hinge at B and an internal slider at C. Each segment of the beam has a mass per unit length of m. Complete only sections A, B, C & D of a solution, namely A. Modeling & Techniques; B. Solution Strategy; C. Problem Set-Up & Geometry; D. FBDs. In part D, draw complete Free Body Diagrams for the entire compound beam and then FBDs for each individual segment of the beam (AB, BC and CD). State the number of unknowns for each FBD. As for all FBDs, show all forces and couple moments acting on the isolated system. A 350 lb-ft E B 500 lb 80 lb/ft 60 F D -2 ft 2 ft 3 ft 2 ft 4 ft -2 ft- '1 ft'