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Here are the key steps to solve this problem: 1) Draw the FBD of the entire truss and determine the reactions at supports A and B. ΣFx = 0 → RA = 0 ΣFy = 0 → RB - 1000N = 0 → RB = 1000N 2) Analyze joint C which has 2 unknown forces (TCD, TCE) and 1 known force (RB). ΣFx = 0 → TCDcos30° + TCEcos30° = 0 ΣFy = 0 → -RB + TCDsin30° + TCEsin30° = 0 Solve to get TCD = 1000√3 N, TCE = -1000

Author

Anees Ur Rehman

Language

EN