! Required information 10-m-long steel rails of a railroad track (Es = 200 GPa and as = 11.7 × 10-6/°C) were laid at a temperature of 7.5°C. Determine the normal stress in the rails when the temperature reaches 48°C, assuming that the rails are 10 m long with 3-mm gaps between them. The normal stress in the rails is MPa.

Answer the following: What is the axial stress produced in steel (in MPa) ? what is the axial stress produced in concrete ( in MPa) NOTE: iclude the free body diagram.

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Hi, it s Mechanics of Materials I question. The diameter of the pin b and the cable connected in c, which is in a single slide with 6 mm diameter, is 3 mm. The operating normal and shear stresses of the accelerator pedal system are 140 MPa and 28 MPa, respectively. Determine the maximum force P that can be applied to the foot pedal? We need force P..

Two solid cylindrical rods support a load of P = 39 kN, as shown. Rod (1) has a diameter of 16 mm and the diameter of rod (2) is 11 mm. Determine the axial stress in rod 2. Assume a = 2.2 m, b = 4.6 m, c = 2.7 m, and d = 2.4 m. Use positive for tensile stress and negative for compressive stress. Express your answer in MPa rounded to the nearest whole number.

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Please derive the formula for the elongation due to tensile stress for a  uniformly tapering cylindrical rod and get the same expression as marked in the picture .

Please don't provide handwritten solution .....