P4. Two solid circular rods are welded together at B as shown. Determine the normal stress at the midpoint of each rod. Disre- gard the weight of the rods. A 1.5 m B + 1.0 m 1 Fig. P1-04 C 30 mm Ø 60 kN 20 mm Ø 40 KN

The cantilever beam AB will be installed so that the 60-mm side forms an angle β between 0 and 90° with the vertical. The 660-N vertical force P is applied at the center of the free end of the beam. Determine the value of β for which the normal stress at point a is a maximum and the corresponding value of that stress. (Round the final answer to two decimal places.)

1200 N 2. For the bone shown to the left, assume the cross-section at C can be approximated as annular, with an outer diameter of 25mm. When the 1200 N forces are applied, the average normal stress in the bone at point C is determined to be 3.80 MPa. Determine the inner diameter of the bone cross section at C. Ans: d; = 14.93 mm 4 in. P 3 in. B 1200 N "UI 8

only HANDWRITTEN answer needed ( NOT TYPED)