Answer Happy

2) The tension members having a square cross-section with the slide length a are fastened together using two bolts, one on each side of the members, as shown in the figure below. Which of the following statements is incorrect for this assembly? 600 0.75F (A) The normal stress on the joint plane is (B) The maximum principal stress at the joint equals C) The minimum principal stress at the joint equals zero. (D) The shear stress on the joint plane is 0.5P (3) A beam having the cross-section (dimensions in mm) shown in the figure below is subjected to a vertical shear force V = 400 N. The cross-section has a constant wall thickness 1 = 4 mm and the second moment of area l, = 10 mm". Which of the following statements is incorrect for this beam? 6 a 60 Z 60 80 40 (A) The shear stress at point bis 1.2 MPa. (B) The maximum shear stress occurs at point d C) The shear stress varies nonlinearly on the inclined part from point o to point d. D) The minimum shear stress occurs at point f.