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1. |
A sign is subjected to a wind loading that exerts horizontal forces of 300 lb on joints B and C of one of the side supporting trusses. Determine the force in members BC, CD, DB, and DE of the truss and state whether the members are in tension or compression. |
A. | CB = 720 lb C, CD = 780 lb T, DB = 0, DE = 780 lb T |
B. | CB = 720 lb T, CD = 780 lb C, DB = 0, DE = 780 lb C |
C. | CB = 125 lb T, CD = 325 lb C, DB = 0, DE = 325 lb C |
D. | CB = 125 lb C, CD = 325 lb T, DB = 0, DE = 325 lb T |
Answer» C. CB = 125 lb T, CD = 325 lb C, DB = 0, DE = 325 lb C | |