1-2-8 The four struts at A, B, C, and D all have the same cross-section. Find the minimum diameter of the struts knowing that the ultimate normal stress is 58 ksi and the factor of safety is 3.

The question is

2.4 kips The two portions of member AB are glued together along a plane forming an angle 0 with the horizontal. Knowing that the ultimate stress for the glued joint is 2.5 ksi in tension and 1.3 ksi in shear, determine (a) the value of 0 for which the factor of safety of the member is maximum, (b) the corresponding value of the factor of safety. (Hint: Equate the expressions obtained for the factors of safety with respect to the normal and shearing stresses.) B 1.25 in. 2.0 in.

P A B 1m E 1m 2m The simply supported beam shown has a solid rectangular cross section having beam width of 130mm and a height of 200mm. Assuming values of P = 25KN, w = 30 kN/m, and E = 5m, determine: 1) The max tensile bending stress in MPa (enter this value into D2L answer box, in MPa). Exactly where does this occur along the beam? (4 sigs) 2) The max shear stress in MPa. Exactly where does this occur along the beam? ( 4 sigs) Your Answer:

Could you please provide a conceptual explanation with this?

A simple pin-connected truss is loaded and supported as shown. The truss is constructed from three aluminum members, each having a cross-sectional area of A=1480 mm². Assume a-1.5 m, b-6.5 m, and c-3.8 m. If P-55 kN and Q-90 kN, determine the normal stress in each member. L. Answers: JAB" OBC= MPa (C) MPa (T)

Kindly give me the solution of this please with these answers: Ans. CE = -2.74kN (C), 0.68 MPa

Problem 2 The rigid bar is plnned at A and held by two flexible bars at E and C. The load P Is applled at B. The two flexible bars FE and DC each have a diameter of 1 In. The flexible bars are elastic- perfectly plastic with a yleld stress equal to 20 ksl and a yleld strain of 0.001. Determine the following: The load R, at first yleld and the corresponding deflection at B, &, The ultimate load Pu and the corresponding deflection du The permanent deflection and residual stresses in each rod if the ultimate load is removed Construct P - A curve showing yield, ultimate and permanent deformation o (ksi) 1 ft E F 1 ft1 ft 20 B P e (in./in.) 0.001 1 ft D 2 ft 1 ft A

The Figure below shows a two-member truss supporting a block of weight W. The cross-sectional areas of the members are 800 mm² for AB and 400 mm² for AC. Determine the maximum safe value of W (kN) if the working stresses are 110 MPa for AB and 120 MPa for AC. ... B 40 deg. A 60 deg. A) 38.90 в) 55.30 61.70 76.2

Prob 1. The rigid bar below is supported by a pin and two rods and must support a load of 100 kN is placed 3 m from A. The brass (Ebrass = 85 GPa) rod has a cross section of 30 x 30 mm and the copper (Ecopper = 120 GPa) rod 20 x 20 mm. Determine the normal stress and deflection of both bars. 1.5 m 2 m B -copper 100 kN brass- 3m 3 m E