Knowing that for the extruded beam shown the allowable stress is 120 MPa in tension and 149 MPa in compression, determine the largest couple M that can be applied. 80 mm 40 mm 54 mm The largest couple M that can be applied is kN.m.

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.)

1.14 Two hydraulic cylinders are used to control the position of the robotic arm ABC. Knowing that the control rods attached at A and D each have a 20-mm diameter and happen to be parallel in the position shown, determine the average normal stress in (a) member AE, (b) member DG. 400 mm E -300 mm- A F 150 mm 150 mm 200 mm B 600 mm- 800 N C

Knowing that the magnitude of the horizontal force P is 8 kN, deter-mine the stress at (a) point A, (b) point B

PROBLEM 1.2 Two solid cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that d = 50 mm and dz = 30 mm, find the average normal stress at the midsection of (a) rod AB, (b) rod BC. 300 mm 40 kN 250 mm V30 KN

1.26 part A thanks