Q2/ Determine the forces at the pin joint (F) and the roller support (G) ? 30KN 20 KN 2m BY 2m D 2m G = 130 KN, Fx = 130 KN, and Fy = 50 KN %3D %3D G = 50 KN, Fx = 70 KN, and Fy = 100 KN %D %D O G = 0 KN, Fx = 0 KN, and Fy = 50 KN %3D %3D O All of the above 2m
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- Two steel wines support a moveable overhead camera weighing W = 28 lb (see figure part a) used For close-up to viewing of field action at sporting, events. At some instant, wire I is at an angle a = 22° to the horizontal and wire 2 is at angle fi = 40°. Wires I and 2 have diameters of 30and 35 mils, respectively. (Wire diameters are often expressed in mils; one mil equals 0.001 in.) (a) Determine the tensile stresses s and s2 in the two wires. (b) If the stresses in wires 1 and 2 must be the same, what is the required diameter of wire 1 ? (c) To stabilize the camera for windy outdoor conditions, a third wire is added (see figure part b). Assume the three wires meet at a common point coordinates (0, 0. 0) above the camera at the instant shown in figure part b. Wire I is attached to a support at coordinates (75 ft, 48 ft, 70 Ft). Wire 2 is supported at (-70 ft. 55 ft, 80 Ft). Wire 3 is supported at (-10 ft. -85 Ft, 75 ft). Assume that all three wires have a diameter of 30 mils. Find the tensile stresses in all three wires....An electric motor drives a compressor by use of V-belt. The angle of contact on the smaller pulley is 2.89 rad and the belt speed runs at 29.36 m/s. The groove angle of the pulleys is 35°. Determine the tension in the slack side of the belt in N if the belt has a cross-sectional area of 366 mm2, density 1000 kg/m3, and an allowable tensile stress of 2.3 MPa. The coefficient of friction between the belt and the pulley is 0.3Suppose that P1 = 5 kN and P2 = 8 kN. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. Fab = 10kN Fad = -13.2kN a) Determine the force in member BC of the truss. b) Determine the force in member CD of the truss. c) Determine the force in member BD of the truss.
- The uniform 713 kg bar is supported by a smooth wall at A and by a pin at B that is in double shear. Determine the diameter of the smallest pin that can be used if its working shear stress is 42 MPa. Note: Gravitational acceleration is equal to 9.81 m/s2 LAB=6 m; L1=3.6 m.P1=215 N P2=325 N P3=150 N L1=3m L2=4m 1. Draw a "free body diagram". The diagram should be for members BE, BF, CF, and DF to help solve. 2. What is the force on members CF, BF, BE? Is each of these members having tension or compression?Application of Equilibrium Solve for the value of unknown variables Given : P1 = 6.85 KN P2 = 4.65 KN W1 = 6.15 KN/m Unknowns : RAy , RAx ,RBy , MA What is the value of internal shear 2.50m to the right of support A
- Q3/ A screw-jack is used to lft a load of 4 kN. The screw of the screw-jack is square threaded with two threads to 1 cm. If the co-efficient of friction between the nut and screw is 0,095 and outer diameter of screw s 6 cm, find the force required atthe end of the handle of length 50 cm to ift the load. (20 M)PROBLEM: Determine the forces in each member using any methoddiscussed in your theory of structures/mechanics. Using Software is notallowed. Show complete solution and tabulate your answers indicatingwhether it is compression or tension. Use Pn = 205 kN, Po = Zero. a) From the Problem and the image , Design one tension member, use either a double angle of a wt section. Check its adequacy using 1 line of bolts (three bolts in a line spaced at 75mm on centers) Assume a bolt diameter from 16-22mm. Use A 36 for all steel. Neglect block shear.Rod AB leans against the wall with a coefficient of static friction, μSB = 0.2. The contact surface at A is smooth (μSA = 0). Find the minimum force P necessary to prevent rod AB from sliding, given:WRod = 40 lbs, L1 = 7 ft, θ = 42 °.
- A belt drive is required to transmit 10 kW from a motor running at "600 rpm. The belt is 12 mm thick -and -has a mass density of 0.001 g/mm3. Safe stress in the belt is not to exceed 2.5 N/mm2. Diameter of the driving pulley is 250 mm, whereas the speed of the driven pulley is 220 rpm. The two shafts are 1.25 m apart. The coefficient of friction is 0.25. Determine the width of the belt.In the figure, the radius of cylinder A is 4m, cylinder B is 6m and cylinder C is 5m. Neglecting friction, a) solve For the reaction between A and B, b) reaction between the wall and B c) reaction between the Floor and A. Given: Distance between 15 KN and 40 KN load is 8m.An 800 N-m couple is applied to the flywheel as shown. The coefficient of belt friction is 0.20. The minimum force P required to prevent rotation of the flywheel is applied. a.) Which Tension is larger, Ta or Tb? Explain b.) What is the angle of contact in radians? c.) What is the value of the ratio Ta/Tb? Please answer these , with FBD and solutions please.