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A cantilever beam is made from three materials: PVC (E-3 Goa, 50 MPa), Nylon(E=1.2 GPa, σ- 40 MPa), and Bakelite (E=7.5 GPa, σ = 80 MPa). Find the minimum beam width if the beam is allowed to just reach its plastic moment under the loading shown. Draw the associated stress distribution on the beam cross-section. 250 kN/m PVC 25 mm Nylon 50 mm 0.5 m 0.5m Bakelite 50 mm

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50MPa 25m -30 Using 80 (50-X)も 160x = 150Plostic Mowienr) calculation of 50x 25x(4.631s t5 12.5) +440x 5t-67s +25) 2.5 mm t 80 4.6875 2. 50 mm 80 4.6875 145 312s m Lo2.5okry suppor f 250x 0.5 x 10.5土0.5 3 22 5.61, b= 93:75t )b 415 43 mm

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