Question

The 150-kg bucket is suspended from end E of the frame. Determine the average normal stress 1 a) in the 6-mm diameter wire CF and the 15-mm diameter short strut BD. The 150-kg bucket is suspended from end E of the frame. If the diameters of the pins at A and D are 6 mm and 10 mm, respectively, determine the average shear stress developed in these pins. Each pin is subjected to double shear. b) - 0.6 m- 0.6 m 0.6 m 30 1.2 m

Answer 1

Consider FBD of System from equilibruin equations, EMA=0 1504981 = 1471-5 N SM 30 x 1.8 - 50 X98/1.220 . Fef = 1962 N - 1962 N a brit me Normal stress en 6mm wirse CF, Por69.39 MPa ! Now, Efy=0 :Ay - Fie cos 30 - 1471.550 • Ay= 3170.64 N . Efero Axe - FCF SM30 20 Be = 981N RA= rac?+ Ay 2 = √3170-64² 198,2 Rin = 3319 N.

consider FBD of link CDE SMC=0 by or -> oth 450 FanCA 45 x06 - 1471.5 X1.2=0 C 141.5N FBO For = 4162 N (compreensive) 4162 x 152 João - 23.55 MPa] Partb. 3) The - 3319 2x T/X62 T To=58.69 MPa I Shear stress at pin A. ) Z sro - 41627 2 TX102 Th= 26.5 MPa 7 Shear stum at pin D.