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Consider the K-truss shown in (Figure 1). Suppose that Pi = 1300 lb, P2 = 1650 lb and P3 = 1800 lb. Figure < 1 of 1 L K I 15Part A Determine the force in member CD and state if the member is in tension or compression. Express your answer using threePart C Determine the force in member ND and state if the member is in tension or compression. Express your answer using three

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Page ① first calculate the support reactions. Take moment equilibrium about point A. Pi (20) + P₂ (40) + P₃ (60) = VG (120).(a) Page 3 Calculation of bar force in CD., KJ, ND, NJ. we will solve the problem wring method of sections. Take a vertical sPage ③ Now, consider the left half of the truss obtained by sectioning bars KJ, NJ, ND, CD & Fy=0. VAT Nos ( 1 ) - NND (55) =Pase Now, consider moment about point k. & Mr =0. VA (40) - P, (20) - NcD (30) =0. T N - (2083.3 314o) - (30)(20). 10.30 Ng =

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