Learning Goal: A beam with length L = 3 m is supported by a pin joint at A and a cable attached at Cas shown in (Figure 1). It is subjected to the distributed load with w₁ = 1.4 kN/m and ₂ = 1.8 kN/m. The angle between the cable and the beam is 8 = 40°. Determine the normal force, shear force, and bending moment acting at point B, located z = 0.7 m to the left of the end of the beam. gure Bx c < 1 of 3 ▼ Part E What is the internal shear force at point B? Assume the force acts as shown, and use the appropriate sign for your answer. Express your answer to three significant figures with appropriate units. ▸ View Available Hint(s) VB = -1.27 kN Submit ✓ Correct Part F Previous Answers What is the internal bending moment at B? Assume the moment acts as shown, and use the appropriate sign for your answer. Express your answer to three significant figures with appropriate units. ▸ View Available Hint(s) Submit ■μÀ MB = 0.950 Previous Answers kN•m ? X Incorrect; Try Again; 3 attempts remaining

Two street lights are mounted as shown in the figure one at A and the other at C. The member AD is able to freely rotate about D. Member BE is a steel cable. B. EACH street light has a mass of 5 kg, AB=20cm, BC=20cm, CD=10cm, DE=17.32cm. Assume gravity is 9.81 N/kg. h=4cm Draw the shear force profile (a) between point A and D. On the diagram, clear indicate the values on the diagram. (b) member just to the right of point B. Calculate the maximum bending shear stress. At what distance from the bottom does it occur? Consider a cross-section of the (c) distance from the bottom does the minimum bending shear stress occur? What is its value? For the same cross-section, at what

For the beam and loading shown in Figure 5, determine the value of (r) at the point of action of the resuitant force of the distributed load using point B as the origin. Parabola Vertex 2000 N/m 900 N/m B 6 m A Figure 5: A parabolic distributed load on a beam AB. Answer: If the loading were analysed using point A as the origin, would the value of w at the location of the resultant change? Select one: a. No b. Yes

The channel shape cross-section and the rectangular cross-section shown in the Figure Q4 are made of materials with elastic-perfectly plastic behaviour. The yield stress of the material used for the channel shape cross-section is oy = 473 MPa, whereas that used for the rectangular cross- section is 0.850y. Compute the thickness of the web, t, of the channel shape section if the two cross sections have identical plastic bending moment about the z-axis. In Figure 4, h= 77 mm, b=46 mm, a=11 mm, H=77 mm, d= 46 mm N b h a + N a | d H