A pin- connected truss is loaded and supported as shown in the figure. Determine a. The normal stress in member DE if it has a cross-sectional area of 750 mm². Ans. 17.78 MPa (T) b. The minimum cross-sectional area for member BC if the normal stress is limited to 30 MPa. Ans. 388.9 mm² c. The shear stress at pin at A if it is in double shear and has a diameter of 25 mm. Ans. 11.88 MPa

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