3. The pipe ACDE is supported by ball-and-socket joints at A and E and by the wire DF. Determine the tension in the wire when a 640-N load is applied at B as shown. 490 mm Z A 200 mm 640 N B 480 mm D E 160 mm 240 mm

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The trough of concrete weighs 700 lb. 30° a. Choose a correct free body diagram of the cable's ring A. Start/End AB AB 30 30 30 30 AC AC start/End А. В. start/End AB AB 30 F 30 30 F 30 AC AC Start/End C. D. The correct diagram is Select b. Treating the ring as a particle, determine the tension in cables AB and AC. (Express your answers using three significant figures.) AB = |lb AC = |lb