The mean dimensions of the cross section of the leading edge and torsion box of an airplane wing can be approximated as shown. The wing is subjected to a torque of 4.7 MN m and the wall thickness is 10 mm. The wing is made of 2014-T6 aluminum alloy. Figure 1 of 1 0.5 m 10 mm 10 mm 10 mm- 2 m 0.25 m 0.25 m Express your answer with the appropriate units. Tavg 124 MPa Submit Part B Correct My Answers Give Up Determine the angle of twist per meter length of the wing. Express your answer with the appropriate units. VΠΙ ΑΣΦ It vec Submit My Answers Give Up Incorrect; Try Again; 5 attempts remaining ? °/m

A cylindrical bar of steel 9.9 mm (0.3898 in.) in diameter is to be deformed elastically by application of a force along the bar axis. Determine the force that will produce an elastic reduction of 3.0×10-3 mm (1.181 ×10-4 in.) in the diameter. For steel, values for the elastic modulus (E) and Poisson's ratio (v) are, respectively, 207 GPa and 0.30. i N

Getting measurements from Figure , determine approximate values of the following items for steel with different carbon contents. Use one system of units only as specified by the instructor.a. Yield stressb. Ultimate strengthc. Strain at failured. Effect on modulus of elasticitye. Approximate toughness. Curves may be approximated with a series of straight lines.f. Comment on the effect of increasing carbon content on items a through e above.

QI/ An aluminum bar carries the axial loads at the positions shown in Fig. 1, below. The diameter for part AB, BC and CD is 35 mm, 40 mm and 30 mm, respectively. The elastic modulus for aluminum is 72.4 x 10 N/mm. Determine the internal stresses at section (A-B), (B-C) and (C- D), and the elongation (AL) in length at each part of aluminum due to loading. в D 37 kN 10 kN 45 kN 18 kN 1000 mm 800 mm I 600 mm Fig. 1

At a temperature of 37.4 °C a 0.49-mm gap exists between the ends of the rods shown. At a later time when the temperature has reached 128.7°C, determine the change in length of the steel rod if L = 328.25 mm and M = 215 mm. Round off the final answer to four decimal places.

STRENGTH OF MATERIALS\ What will be the elongation of a steel bar 40mm x 40mm square section when it is subjected to an axial tensile load of 200kN, Length is 2m and modulus of elasticity E=200GPa.

A cylindrical specimen of some metal alloy having an elastic modulus of 101 GPa and an original cross-sectional diameter of 3.6 mm will experience only elastic deformation when a tensile load of 2430 N is applied. Calculate the maximum length of the specimen before deformation if the maximum allowable elongation is 0.41 mm. i mm

The cross-section is 10 mm x 40 mm

Consider a composite shaft of steel and aluminium having length L and fixed at one of the ends as shown in figure. Steel O Al 1.5 d t The hollow shaft of steel has outer diameter as 1.5 d and inner diameter as d, while the solid shaft of aluminium has the diameter as d. If the composite shaft is subjected to torque, T then the torque resisted by steel shaft is % (rounded off to one decimal place) of the applied torque. Assume modulus of rigidity of aluminium is one third of modulus of rigidity of steel. [Take G₁ = 3 GAL]