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Two identical linkage-and-hydraulic-cylinder systems control the position of the forks of a fork-lift truck. The load supported by the one system shown is 1500 lb. Knowing that the thickness of member BD is
Fig. P1.28
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- Only 1.53 plzarrow_forwardIn the hanger shown the upper portion of link ABC is 9-mm thick and the lower portions are each 6-mm thick. Epoxy resin is used to bond the upper and lower portions together at B. The pin at A is of 9-mm diameter while a 6-mm-diameter pin is used at C. Determine (a) the shearing stress in pin A. (b) the shearing stress in pin C, (c) the largest normal stress in link ABC, (d) the average shearing stress on the bonded surfaces at B, (e) the bearing stress in the link at C. 30 mm 150 mm 40 mm 170 mm 240 mm 2400 N 120 marrow_forwardIn the structure shown, an 8-mm-diameter pin is used at A, and 12-mm-diameter pins are used at B and D. Knowing that the ultimate shearing stress is 100 MPa at all connections and that the ultimate normal stress is 250 MPa in each of the two links joining B and D, determine the allowable load P if an overall factor of safety of 2.6 is desired.arrow_forward
- а) An annular washer distributes the load P applied to a steel rod to a timber support. The rod's diameter is 22 mm, and the washer's inner diameter is 25 mm, which is larger than the hole's permissible outer diameter. Knowing that the axial normal stress in the steel rod is 35 MPa and the average bearing stress between the washer and the timber must not exceed 5 MPa, examine the smallest allowed outer diameter, d, of the washer. - 22 mm Figure 4arrow_forward1.26 part A thanksarrow_forwardAn annular washer distributes the load P applied to a steel rod to a timber support. The rod's diameter is 22 mm, and the washer's inner diameter is 25 mm, which is larger than the hole's permissible outer diameter. Knowing that the axial normal stress in the steel rod is 35 MPa and the average bearing stress between the washer and the timber must not exceed 5 MPa, examine the smallest allowed outer diameter, d, of the washer. %3D %3D +22 mm P Figure 4arrow_forward
- 19. knowing that a force P of magnitude 75 N is applied to the pedestal shown, determine (a) the diameter of the pin at C for which the average shearing stress in the pin is 40 MPa, (b) the corresponding bearing stress in the pedestal at C, (c) the corresponding bearing stress in each support bracket at C. 75 mm 9 mm - 300 mm- B 125 mm D 5 mmarrow_forwardThe hydraulic cylinder CF, which partially controls the position of rod DE, has been locked in the position shown. Member BD is 5/8 in.thick and is connected to the vertical rod by a 3/8-in.-diameter bolt.Determine (a) the average shearing stress in the bolt, (b) the bearing stress at C in member BD.arrow_forwardTHE FRAME SHOWN CONSISTS OF FOUR WOODEN MEMBERS, ABC, DEF,BE, AND CF. KNOWING THAT EACH MEMBER HAS A 50X100MM RECTANGULAR CROSS SECTION AND THAT EACH PIN HAS A 13 MM DIAMETER, DETERMINE THE MAXIMUM VALUE OF THE AVERAGE NORMAL STRESS (A) INMEMBER BE, (B) IN MEMBER CF. 1.125 mm 750 mm V2.160 N 100 mm 100 mm 1.000 mm 375 mm 750 mmarrow_forward
- Link AC is made of a steel with a 65-ksi ultimate normal stress and has a xin. uniform rectangular cross section. It is connected to a support at A and to member BCD at C by-in.-diameter pins, while member BCD is connected to its support at B by a -in.-diameter pin. All of the pins are made of a steel with a 25-ksi ultimate shearing stress and are in single shear. Knowing that a factor of safety of 3.75 is desired, determine the largest load P that can be applied at D. Note that link AC is not reinforced around the pin holes. 16 IN 8 in 16. ---4 in- The largest load P that can be applied at Dis[ lb.arrow_forwardPROBLEM 8.40 A thin strap is wrapped around a solid rod of radius c= 20 mm as shown. Knowing that I = 100 mm and F = 5 kN, determine the normal and shearing stresses at (a) point H, (b) point K. o = 79.6 MPa T=7.96 MPa O =0 T=13.26 MPaarrow_forward15. In the steel structure shown, a 6-mm-diamter pin is used at C and 10-mm-diameter pins are used at B and D. The ultimate shearing stress is 150 MPa at all connections, and the ultimate normal stress is 400 MPa in link BD. Knowing that a factor of safety is 3.0 is desired, determine the largest load P that can be applied at A. Note that link BD is not reinforced around the pin holes. Front view 18 mm 6 mm 120 mm- Side view 160 mm Top viewarrow_forward
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