Q9⁹ Find the sum of internal forces of Members AB, BC and BD of the truss shown below. Please note that compression is positive. 12 kN 30⁰ 5m 60° 20 kN 60° E 30% 5m 30⁰ Figure 9 60° D | 16 KN B 60⁰ 30⁰ 5m

A force of Fi = (180 i -250j + 190k) lb is applied to the pipe assembly at point B. A force of F2 -250j + 250k) lb is applied to the pipe assembly at point D. The pipe assembly is supported by a fixed support at point A. (180 ? F1 В d3 C d1 d2 y F2 Values for the figure are given in the following table. Note the figure may not be to scale. Variable Value di 1 ft d2 2 ft dz 3.5 ft a. Determine the normal force at point C, Nc. Express as a Cartesian Vector. b. Determine the normal force at point C, Vc. Express as a Cartesian Vector. c. Determine the Torsional Moment at point C, Tc. Express as a Cartesian Vector. d. Determine the Bending Moment at point C, Bc. Express as a Cartesian Vector.

A shaft is composed of elements made of S355 with a modulus of elasticity of 2.1×1052.1×105 N/mm² and a Poisson's ratio of 0.3. As shown in the picture, on the right side, there are two forces of 10,000 N each, acting at an angle of 15° upwards, creating a moment that is statically compensated by the force F2​ on the left side. The shaft is supported at positions A and B. In the same position (for simplicity), there are two critical cross-sections leading to stress concentrations. The sleeve near F2​ is shrink-fitted. The dimensions there are d=50 mm, D=120 mm, and the length of the sleeve is 50 mm. Ha=1 µm and Hn=1 µm. The fit is H7/s6. Determine breell​.

2 B 2

The structure is subjected to the loadings shown. Member AB is supported by a ball-and-socket at A and smooth collar at B. Member CD is supported by a pin at C. Suppose that F₁ = 280 N. (Figure 1) Figure 2 m 4 m 1.5 m 60° D B 60° C Z 45 F₁ 800 N-m 3 m ▼ Determine the z, y, z components of reaction at A using scalar notation. Express your answers using three significant figures separated by commas. ΓΙΑΣΦ Az, Ay, Az = Submit Part B Request Answer Cz. Cy. Cz = ΠΕ ΑΣΦ vec P Pearson Determine the x, y, z components of reaction at C using scalar notation. Express your answers using three significant figures separated by commas. → O ↓1 vec SMK ? SAVE ? N N

The truss below is subject to the loads as shown. All of the members are attached at plates and can be treated as pin connected. The truss is attached to the ground at a pin joint at G and a roller at D. The applied load H is 335 N. The applied load Jis 211 N. What is the internal resultant normal force in member CD in N? (tension is positive, compression is negative) E F G A 3 m B |● ● H] 3 m 3 m D 5 m

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