II. A rope is looped over the two fixed posts each of 16 cm diameter as shown, If u= determine the maximum and minimum values of P that will prevent motion of load W=1200 KN. 1. T 14 Cm 14cm 1200
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- 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 NThe 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.Question 3. Determine the crippling load for a I-section of dimensions 12 cm × 12 cm × 2 cm and of length 5 m when it is used as a strut with both of its ends fixed. Take E = 2 × 105 N/mm2.
- A power transmission cable consists of ten copper wires each of 1.5 mm diameter surrounding three steel wires each of 3.5 mm diameter. Determine the combined E for the compound cable and hence determine the extension of a 20 m length of the cable when it is being laid with a tension of 3 kN, For steel, E = 200GN/m2 ; for copper, E = 100GN/m2 .A straight girder of uniform section and length L rests on supports at the ends, and is propped up by a third support in the middle. The weight of the girder and its load is w per unit length. If the central support does not yield, prove that it takes a load equal to (5/8)wL. ANSWER: 1.80cm and 2.48cm Please show solution to the answer.Three bars, two made of aluminum and one made of steel, support a rigid block. An object of weight W is dropped vertically from a distance h above the rigid block. Both steel and aluminum bars have cross-sectional area of 50 mm2 and length of 0.5 m. The elastic moduli for the aluminum and steel are 76 GPa and 184 GPa, respectively. a) If W=1000N and h=0.1m, determine whether the three bars are still safe to perform. b) If h=0.2m, determine the maximum weight that can be dropped without causing failure to the bars
- A 76-m length of wire having a mass per unit length of 2.2 kg/m is used to span a horizontal distance of 75 m. Determine (a) the approximate sag of the wire, (b) the maximum tension in the wire. [Hint: Use only the first two terms of Eq. (7.10).](Reference to Equation 7.10):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 truss shown is subjected to forces P = 68 kN, the length L divided equally, and H = 0.6 m. If the resistance of bar 1 is 151 kN; Determine the maximum length (in meters) of the reinforcement so that the resistance of said bar is not exceeded.
- Before the load is placed on the rigid plate, the top of the central spring is 20 mm lower than the outer springs. Each outer spring is made of 24 turns of 15-mm diameter wire on a mean radius of 60 mm. The central spring consists of 16 turns of 20 mm dimeter wire on a mean radius of 80 mm. If a load P = 5 kN is now placed on the rigid plate. Disregarding the weight of the plate, use G = 83 GPa and use Light spring formula. Determine the maximum shearing stress of the in uter spring. In MPaDetermine the equivalent spring stiffness constant of a rigid bar with two spring support on both end and an applied load at the mid-span of the beam. Given that k1 = 10 N/m and k2 = 20 N/mThe load of 2000 lb is to be supported by the two vertical steel wires for which sY = 70 ksi. Originally wire AB is 60 in. long and wire AC is 60.04 in. long. Determine the cross-sectional area of AB if the load is to be shared equally between both wires. Wire AC has a cross-sectional area of 0.02 in2. Est = 29.0(103) ksi.