1. Copper bar shown calculate the stresses when the temperature drop from 85 °C to 50 °C. a = 0.000018/ C, 3.5 m

(b) A machine component is subjected to the stresses as shown in the below figure. Using the Mohr's circle, determine normal and shearing stresses on the section AB, inclined at an angle of 30 with the x-x axis. Also find the principal stresses. Test showed that the material of the component has yield strength of 8Pa. Justify whether the material needs a replacement using the maximum shearing stress criterion. & P 50MPA 80 MPa 25 MPa 30° 100 MPa 45° 100 MPa 25 MPa O - - 100 MP 50MPA Co5 45= Tu - A0Mpu

!! Show Complete & Detailed Solution w/ FBD !!The figure shows that when the rigid bar is in the horizontal position, the wires are unyielding. The bar rotates clockwise about the pin B through an angle of 2.1° when a force is applied at the handle. Determine the average normal strain developed in wires.a. AHb. CGc. DF

= 5.29 Knowing that P Q = 480 N, determine (a) the distance a for which the absolute value of the bending moment in the beam is as small as possible, (b) the corresponding maximum normal stress due to bending. (See hint of Prob. 5.27.) THEMOM DV P nedw to absol be500 mm 500 mm pripoly not Alase BOLERON 9T AO mersib anamorp sode bol ng appiled: the batuda Fig. P5.29 edi te ating out A Daniloobo CV. D (5.6b) Q f 12 mm s mas i nadw bozudiruaib ebimnice di Tibe sade 2b2 B (10. busd bus bris to pages. eda sdtlanbi are noe minnas li batalize yo led ditw i most u tamom gaiboedshus en betrovalmisoled loads Dignst Box brol 18 mm

Problem 6: The compound bar containing steel, bronze, and aluminum segments carries the axial loads shown in the figure. The properties of the segments and the working stresses are listed in the table. Bronze A (in.²) Steel 2 ft E (psi) Ow (psi) Aluminum 4 ft 3 ft 2P Steel 0.75 30 × 106 20 000 Bronze 1.00 12 x 106 18 000 ЗР 4P Aluminum 0.50 10 × 106 12 000 Determine the maximum allowable value of P if the change in length of the entire bar is limited to 0.08 in. and the working stresses are not to be exceeded.

O 0.0011 mm/mm QUESTION 4 When the temperature is T= 60°F, the ASTM-A36 steel bar shown is constrained to just fit between two fixed supports at A and B. Determine the average normal thermal stress developed in the bar if the temperature is raised to 120°F. Use the properties given in Appendix D (table on page A-17): Modulus of Elasticity, E = 29.0 × 100 psi, and Coefficient of Thermal Expansion, a = 6.5 x 10 /°F. 0.5 in. 0.5 in. A 2 ft O 1.5 ksi O 11.05 ksi O 115 ksi O 11.5 ksi O None of these QUESTION 5 Given the allowable normal stress for the flat steel bar shown in the figure is oall = 250 MPa.

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The answer is close to 60 Ksi. I need help showing the work to get the answer . Please include units. Thanks

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