Two forces L (parallel to the y-axis) and A (parallel to the z-axis) are applied at point Q on the assembly shown. The assembly is supported by a bearing at D. L= 18.00 kN 20 60° A = 9.00 kN D 200 |B 130 All dimensions are in mm. 1. Which of the following are the reactions at the support at D? R are force reactions and M are moment reactions. 2. Which of the following gives the moment of force L about the x-axis? oint D? The moment of force L about the z-axis is equal to 1.820 kNm. The moment of force A about the z-axis is equal to 0.900 kNm. The moment of force A about the z-axis is zero. The moment of force A about the y-axis is zero.

Please fill in the blanks and answer what Ay by wean vean newborn and mmax are please

4. The truss shown in figure below is supported by a pin (hinge) support at A and a short link FG. A beam is supported by rollers at joint B and joint C of the truss. The beam support a distributed load as shown. The weight of the beam itself may be neglected. a) Determine the reactions at supports A and F, b) Determine the force in each member of the truss and indicate if the member is in tension or compression. 4 kN 5 kN/m 2 kN/m B D 3 m F Short G Link 2 kN 3 m 3 m 4 m

Find the bending stress at point B located at I m from the right end of the beam. 2 N/m 1N.m 2 cm 10 N I cm 0.6m 0.4m * Im Im

An 85pound force is applied to the bent plate as shown. a. Take the moment about the center point between A and B. b. Change the moment into a force couple that acts through A and B.

5-74 A rod is made from two segments: AB is steel and BC is brass. It is fixed at its ends and subjected to a torque of T 680 N m. If the steel portion has a diameter of 30 mm, determine the required diameter of the brass portion so the reactions at the walls will be the same. G = 75 GPa, Gbr 39 GPa. 5-75 Determine the absolute maximum shear stress in the shaft of Prob. 5-74. C B 1.60 m 680 N-m A 0.75 m

2. Each member of the truss shown below is 2 m long. 800 N D 400 N a) Solve for the reactions at pin A and roller E. A IC -2 m b) Use the Method of Joints to determine the force in members AB, AC, BC, and BD (i.e. you do not have to solve for all the members). Report answers to 2 decimal places and clearly identify if each member is in compression (C) or tension (T). c) Verify your answers from part b by using the Method of Sections to compute the forces in members AC, BC, and BD. Report answers to 2 decimal places and clearly identify if each member is in compression (C) or tension (T).

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Castigliano's theorem Continuous frame ABC has a pin at A, a guided bracket at C, and a rigid corner connection at B (see figure). The elements AB and BC have a bending stiffness El. Determine the magnitudes of the bending moment Mc and the reaction Hc. (Note: ignore axial strains in members AB and BC and consider only the effects of bending.) Mc -8 m- Hc B 4 m 16 kN. 4 m A

*10-68. A rod is made from two segments: AB is steel and BC is brass. It is fixed at its ends and subjected to a torque of T = 680 N-m. If the steel portion has a diameter of 30 mm, determine the required diameter of the brass portion so the reactions at the walls will be the same. Ga = 75 GPa, Ge = 39 GPa. 10-69. Determine the absolute maximum shear stress in the shaft of Prob. 10-68. i.60m 680 N-m 0.75 m