The bell crank is in equilibrium for the forces acting in rods (1) and (2). The bell crank is supported by a pin with a diameter of 14 mm at B that acts in single shear. The thickness of the bell crank is 7 mm. Assume a = 60 mm, b = 100 mm, F₁ = 1000 N, and 9 = 75°. Determine the average shear stress in pin B. Answer in MPa rounded-off to 2 decimal places. Bell crank (2)
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- 1-26. What is the required diameter of the pin Bfor the bell crank mechanism shown in the figure if an applied force of 60 kN at A is resisted by a force P at C? The allowable shearing stress is 100 MPa. Ans, 23.2 mm. 60 N A 150 mm 300 mm Pin BThe control arm is subjected to the forces as shown in Figure 3.5 – 7. All dimensions are in mm. 300 150 100 40° 25 kN 20 kN Figure 3.5 – 7 A) Determine the stress on rod AB if it is 16 mm diameter. Select one: а. 106 MPа b.Р 112 МPа с. 118 МPа d. 129 MPa B) Determine the required diameter of the pin at C if the maximum allowable shear stress is 180 MPa in double shear. Select one a. 18 mm b. 16 mm c. 20 mm d. 12 mmTwo ropes are used to hoist a 530 lb engine/transmission assembly as shown. The rope is anchored at C around the center part of the pin shown, causing the pin to experience a state of double shear. There is a frictionless pulley at A. The normal stress in the rope must not be allowed to exceed 15 ksi, and the shearing stress in the pin must not exceed 21 ksi. When the hoist is in the position given by: a = 44 in b = 11 ft c = 19 ft find the following: (a \& b) The forces carried in ropes AB and BC (c l& d) The necessary diameters of ropes AB and BC (e) The necessary diameter of the pin at C 2013 Michael Swanbom (a) TAB = (b) TBC = (c) dAB = (d) dBc = (e) d =
- Determine the resultant internal loadings acting on the cross section at B of the pipe shown. End A is subjected to a vertical force P and a horizontal force Q. Use P = 90 N and Q = 70 N. a. Determine the internal axial force (in N) in section B. b. Determine the internal shear force (in N) in section B. c. Determine the internal torque (in N-m) in section B. With FBD please thank you.Two forces, each of magnitude P, are applied to the wrench. The diameter of the steel shaft AB is 30mm. Determine the largest allowable value of P if the shear stress in the shaft is not to exceed 120MPa and it's angle of twist is limited to 7deg. Use G=83GPa for steel. -Draw and label the diagram correctly, No diagram in the solution will be marked wrong. -Shortcut solution will be marked wrong.Two ropes are used to hoist a 610 Ib engine/transmission assembly as shown. The rope is anchored at C around the center part of the pin shown, causing the pin to experience a state of double shear. There is a frictionless pulley at A. The normal stress in the rope must not be allowed to exceed 12 ksi, and the shearing stress in the pin must not exceed 23 ksi. When the hoist is in the position given by: a = 41 in b = 13 ft c = 15 ft find the following: (a \& b) The forces carried in ropes AB and BC (c \& d) The necessary diameters of ropes AB and BC (e) The necessary diameter of the pin at C 2013Mchas (a) TAB = () Твс !! (c) dAB = (d) d BC %3! (e) d = %3D be sure to include units with your answers I3D
- 5/5 find the normal stress at left of point C A 100 C 40 kN 50 kN 40 mm 70 10 kN 20 mm 30 mm 100 mm 300 mm 300 mm 200mm B.The mechanism below consists of a solid shaft with a diameter of 2 in between A and B and a hollow shaft with an outside diameter of 7 in and a thickness of 1/2 in between B and C. A torque T = 3 kip-in is applied as shown at A and two forces, each P = 322 lb, are applied as shown at the ends of the levers connected to Point B. Determine the shear stress that occurs on the exterior of the hollow shaft between B and C. Express answer in nearest whole psi.2. If the allowable shear stress for each of the steel pins at A and B is tpe 6.5 ksi and the allowable normal stress for bar CB is Operm 10 ksi, determine the diameter of the pins at A and B and that of the square bar CB. Pin A is in double shear while Pin B is in single shear. Ignore points D and E. (^ } 2.5 ft -3 ft -5 ft 150 lb/ft Fx =
- Two loads P act as shown, one parallel to (x0) and another parallel to z0; each load P equals 2.5 kN. The crankshaft dimensions are b1 = 80 mm, b2 = 135 mm, and b3 = 55 mm. The diameter of the upper shaft is d = 26 mm. Determine the normal stress at point A, which is located on the surface of the upper shaft at the z0 axis. | Yo B b3 Lütfen birini seçin: a. -155.971 MPa b. -200.302 MPa c. None d. -520.946 MPa e. -124.141 MPaTwo loads P act as shown, one parallel to (x0) and another parallel to z0; each load P equals 2.5 kN. The crankshaft dimensions are b1 = 80 mm, b2 = 135 mm, and b3 = 55 mm. The diameter of the upper shaft is d = 26 mm. Determine the normal stress at point B, which is located on the surface of the upper shaft at the yo axis. Yo Хо b3 Lütfen birini seçin: a. 149.606 MPa b. 324.676 MPa c. 139.544 MPa d. None e. 190.884 MPaQuestion 4: Two wrenches are used to tighten the pipe. If the pipe is made from a material having an allowable shear stress of Tallow = 85 MPa, check the allowable force for external and internal diameter of pipe and determine the allowable maximum force P that can be applied to each wrench. The pipe has an outer diameter of 25 mm and inner diameter of 20 mm. 250 mm B 250 mm Figure 4 Answer: Torque = 0.5P, Polar moment of inertial J = 2.26 x 108 m4, outer diameter PS %3D 307.36N, inner diameter P S 384.2 N, Pallowable = 307.36N