The frame shown is supported by fixed support at E and smooth surface at A. Find: the internal forces exerted by the int nol Di
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- The triangular block below is subjected to the Loads P=1200 lb and 400 lb. If AB=8 in, and BC is 6in., resolve each load into components normal and tangential to AC.An aluminum pole for a street light weighs4600 N and supports an arm that weighs 660 N (seefigure). The center of gravity of the arm is 1.2 m from theaxis of the pole. A wind force of 300 N also acts in the (-y)direction at 9 m above the base. The outside diameter ofthe pole (at its base) is 225 mm, and its thickness is 18 mm. Determine the maximum tensile and compressivestresses σt and σc, respectively, in the pole (at its base)due to the weights and the wind force.The outside diameter of the steel pipe shown is 220 mm and its wall thickness is 6.0 mm. The upper bearing plate has the same width as the reinforced concrete beam it supports. The total load on the column by the reinforced concrete beam is 550 kN. Determine: A. The length L of the rectangular upper bearing plate if its width is 275 mm. and the average bearing stress between the steel plate and the reinforced concrete beam is not to exceed 6.2 MPa.
- An aquarium tank holds salt water (RD 1.015) to a depth of 2.9 metres and has sides inclined at 75o to the horizontal. An access door A-B, measuring 1.1 metres by 1.1 metres, is pivoted at the base of the door (B) and held shut by a bolt at the top of the door (A). What is the tensile force in the bolt at point A.The rigid bar ABC is suspended from three wires of the same material. The cross-sectional area of the wire at B is equal to half of the cross-sectional area of the wires at A and C. Determine the tension in each wire caused by the load P.The ABD bracket is supported by a pin at A and the cable DE. Determine the internal forces immediately to the left of the load.Template: (On CD) F= 270 N; M=43.2 N.m; V = 90 N
- Determine the unknown forces by applying d’alemberts principle to a free body.The bar ABCD has rigid supports and consists of three prismatic solid segments, as shown. The end segments have cross-sectional area A1 = 840 mm2 and length L1 = 200 mm. The middle segment has cross-sectional area A2 =1260 mm2 and length L2= 250 mm. Loads PB and PC are equal to 25.5 kN and 17.0 kN, respectively. Determine the magnitude of the compressive axial force FBC (kN).The three-bar truss in Fig. a is subjected to a horizontal force of 5 kip. If the cross-sectional area of each member is 0.20 in2, determine the horizontal displacement at point B. E = 29(103) ksi.
- A crane boom of mass 450 leg with its center of mass at C is stabilized bytwo cables AQ and BQ (Ae = 304 mm2 for each cable) as shown in thefigure. A load P=20 KN is supported at point D. The crane boom lies inthe y - z plane.ho(a) Find the tension forces in each cable: TAQand TBQ(kN}. Neglect themass of the cables, but include the mass of the boom in addition to load P.(b) Find the average stress (6) in each cable.The pin at O can support a maximum force of 3.5 kN. What is the corresponding maximum load L which can be applied to the angled bracket AOB? A. 0.541 kN C. 2.632 kN B. 1.676 kN D. 3.091 kNA rectangular wooden column has the cross section shown. If a = 3 in. and the column is 12 ft long, determine the allowable axial force P that can be safely supported by the column if it is pinned at its top and ixed at its base.