Problem (3): Two gage marks are placed exactly 280 mm apart on 22 mm diameter solid metal rod. When an axial tension force 70 kN is applied to rod, the distance between the gage marks is measured as 280.57 mm. determine the modulus of elasticity of the metal in units of GPa. 70 kN 70 kN 280 mm

C. A rigid steel bar is suspended horizontally by 1m steel rod at one end and 2m bronze rod at the other end as shown. Neglecting the mass of the steel bar, at what distance X (in meters) from the steel rod should a 20 kN force be placed so that the steel bar will remain horizontal? Also, calculate the stresses in steel and bronze rod (in MPa). Use the following data. Steel, st Bronze, Br Br. 2m 20000 N Area (mm²) 600 300 St. 1m -X- E(GPa) 200 83 10 m

Wire BC has a diameter of 0.10 in. And its material has the stress-strain characteristics shown in the figure. Determine the vertical displacement of the handle D if the pull on the handle is slowly increased and reaches the magnitude of P = 655 lb. o (ksi) 40 pulg 80 70 B 50 pulg - 30 pulg € (pulg/pulg) 0.007 0.12

For the beam structure shown below the data is as follows: P= 9.6-kN, L = 6-m, d= 2.4-m, b=100-mm, t-30-mm h=150-mm and h₁=130-mm. Neglect the self-weight of the beam. Based on this information answer the following question: Question 2.5: What is the maximum tensile stress in the beam? [Enter value in N and mm as appropriate] L B h

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A horizontal load P of magnitude 97 kN is applied to the beam shown. Determine the largest distance a for which the maximum tensile stress in the beam does not exceed 75 MPa. 20 mm 20 mm 20 mm y P O 60 mm 20 mm The largest distance a is mm.

1) A brass pipe with a 0.5inch inside diameter and 1/16 inch wall is twisted using a 14inch long pipe wrench. If a load of 74 lbs is applied perpendicularly to the end of the wrench. If the E of brass is 14.6x10^6 psi, what is the max torsion stress in the pipe? • Find the outside diameter of the pipe using the ID and given wall thickness. • Find the polar moment of inertia of the cross-section of the pipe. • Find the torque being applied to the pipe, via the wrench. • Use the torsional stress equation to find the requested stress. Compare your answer: Max Torsional Stress 36.61 ksi

Question 6 Before the 400-kN load is applied, the rigid platform rests on two steel bars, each of cross-sectional area 1400 mm?, as shown in the figure. The cross-sectional area of the aluminum bar is 2800 mm?. Compute the stress in the aluminum bar after the 400-kN load is applied. Use E = 200 GPa for steel and E = 70 GPa for aluminum. Neglect the weight of the platform | 400 kN 0.1 mm Steel Aluminum Steel 250 mm