The structure shown in Figure was designed to support a 30-kN load. It consists of a boom AB with a 30x50-mm rectangular cross section and a rod BC with a 20-mm-diameter circular cross section. These are connected by a pin at B and are supported by pins and brackets at A and C, respectively. 1) Determine the normal stress in boom AB and rod BC. 2) Determine shearing stress in connections A, B, and C. 3) Determine bearing stress at A in member AB, 4) Determine bearing stress at B in members AB and BC. d-25mm Flat end TOP VIEW OF ROD BC 600FRONT VIEW TOP VIEW OF BOOM AB d-25m Plated 20 END VIEW