In the figure, L = 14 ft, P1 = 900 lb, and P2 = 550 lb. Compute the member forces listed below. In each case, tension is positive and compression is negative.
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- A large precast concrete panel for a warehouse is raised using two sets of cables at two lift lines, as shown in the figure part a. Cable 1 has a length L1 = 22 Ft, cable 2 has a length L2= 10 ft, and the distance along the panel between lift points Band D is d = 14 ft (see figure part b). The total weight of the panel is W = 85 kips. Assuming the cable lift Forces F at each lift line are about equal, use the simplified model of one half of the panel in figure part b to perform your analysis for the lift position shown. Find the required cross-sectional area AC of the cable if its breaking stress is 91 ksi and a factor of safety of 4 with respect to failure is desired.Two bars AC and BC of the same material support a vertical load P (see figure). The length L of the horizontal bar is fixed, but the angle fl can be varied by moving support A vertically and changing the length of bar AC to correspond with the new position of support A. The allowable stresses in the bars are the same in tension and compression. When the angle ft is reduced, bar AC becomes shorter, but the cross-sectional areas of both bars increase because the axial forces are larger. The opposite effects occur if the angle 0 is increased. Thus, the weight of the structure (which is proportional to the volume) depends upon the angle ft. Determine the angle ft so that the structure has minimum weight without exceeding the allowable stresses in the bars. Note: The weights of the bars are very small compared to the force P and may be disregarded.A plane frame with a pin support at A and roller supports at C and £ has a cable attached at E. which runs over Frictionless pulleys al D and B (see figure). The cable force is known to be 400 N. There is a pin connection just Lo the left of joint C. (a) Find reactions at supports^, C, and E. (b) Find internal stress, resultants N, V, and M just to the right of joint C. (c) Find resultant force in the pin near C.
- Solve the preceding problem if the mass of the tailgate is MT— 11 kg and that of the crate is hic— 6S kg. Use dimensions H = 305 mm, L = 406 mm, dc= 460 mm, and dT= 350 mm. The cable cross-sectional area is At= 11.0 mm'. (a) Find the tensile Force T and normal stress T in each cable. (b) IF each cable elongates: A hollow, pressurized sphere having a radius r = 4.8 in, and wall thickness t = 0.4 in. is lowered into a lake (see figure). The compressed air in the tank is at a pressure of 24 psi (gage pressure when the tank: is out of the water). At what depth D0will the wall of the tank be subjected to a compressive stress of 90 psi?The mechanical assembly shown in the figureconsists of an aluminum tube, a rigid end plate, andtwo steel cables. The slack is removed from the cablesby rotating the turnbuckles until the assembly is snugbut with no initial stresses. Afterward, the turnbucklesare tightened by 1.5 turns. Calculate the forces inthe tube and the cables and determine the shorteningof the tube. As = 0.85in2 for each cable, AA = 4.5 in2,L = 20 in., Es = 29,000 ksi, EA = 10,600 ksi, andp = 1/16 in.
- A car weighing 130 kN when fully loadedis pulled slowly up a steep inclined track by asteel cable (see figure). The cable has an effectivecross-sectional area of 490 mm2, and the angle a ofthe incline is 308.(a) Calculate the tensile stress σt in the cable.(b) If the allowable stress in the cable is 150 MPa,what is the maximum acceptable angle of theincline for a fully loaded car?Consider the truss shown in the figure, built from three struts attached by three pins. The truss supports a downward force of F = 1,250 N applied at the point B. Assume the mass of the truss is negligible, the pins are frictionless, and the supports at A and C are also frictionless. (a) Assuming ?1 = 25.0° and ?2 = 49.0°, what are nA and nC? (Enter the magnitudes in N.) nA= NnC= N (b) The force any strut applies on a pin must be directed along the length of the strut as a force of tension or compression. What are the directions of the forces that the struts exert on the pins joining them? strut AB on joint A: strut AB on joint B: strut BC on joint B: strut BC on joint C: strut AC on joint A: strut AC on joint C: Find the force of tension or of compression (in N) in each of the three struts. bar AB Nbar BC Nbar AC NA 110-kg uniform ladder is tied at its bottom on the wall using a wire shown in the figure. The floor is frictionless, while the wall is rough. The maximum tension on the wire is 180 N. (a) What is the normal force exerted by the wall on the ladder? (b) What is the frictional force exerted by the wall to the ladder?
- 8. The boom in the figure supports a load W = 1400 lb. Compute the forces in the cables AE and BD and also the components exerted by the ball and socket joint C.Answers: AE = 512 lb; BD = 878 lb; CX = -250 lb;CY = 600 lb; CZ = 800 lb PLEASE GIVE ME A SOLUTION SIMILAR TO THE REFERENCE PHOTO, I DON'T NEED THE J K SOLUTION. THANK YOU2. FH, EH, and EG of the cage system for the loading condition given in Figure. Calculate the rod forces using the section method. Rod State whether the forces are tensile or compressive. P1(kN)=15 P2(kN)=45 L(m)=3What would be the maximum weight W of the block, shown in the following figure, so that the tension developed in any cable does not exceed 100 N