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    Ejercicio 4

    Uploaded by

    John Sanchez

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd

    Ejercicio 4

    Uploaded by

    John Sanchez
    14 views2 pages

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    © © All Rights Reserved

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    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    14 views2 pages

    Ejercicio 4

    Uploaded by

    John Sanchez

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 2

    TAB= 630 lb

    ∑F = 0 = P + TAB + TAC + TAD

    = Pj + 630 lb . λ AB + TAC + TAD

    AB = (-45i – 90j +30k) ft

    AB = √ -(45)2 +(90 ¿ ¿2+¿

    AB = 105 ft

    AC= (38i - 90j + 65k) ft

    AC = √ (38)2-(90 ¿ ¿2+¿ ft

    AC = 115 ft

    AD = (20i – 90j - 60k) ft

    AD = √ (20)2-(90 ¿ ¿2+¿ ft

    AD = 110 ft

    630lb
    TAB = (-45i – 90j + 30k) ft = (-270i lb -540j lb + 180k lb)
    105 ft
    TAC
    TAC= (30i - 90j + 60k) ft = (0.26i lb – 0.78j lb + 0.57k lb) TAC
    115 ft
    TAD
    TAD = (20i - 90j – 60k) ft = (0.18i lb – 0.82j lb – 0.55k lb) TAD
    110 ft

    ∑Fx = 0

    -270 lb+ 0.26 TAC + 0.18 TAD = 0

    0.26 TAC + 0.18 TAD = 270 lb


    ∑Fy = 0

    -540 lb – 0.78 TAC – O.82 TAD + P = 0

    -0.78 TAC – 0.82 TAD + P = 540 lb

    ∑Fz = 0

    180 lb + 0.57 TAC – 0.55 TAD = 0

    0.57 TAC – 0.55 TAD = 180 lb

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