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7. A 20 kg crate at D is supported by a horizontal spring AB and a cable AC, as shown. Determine the unstretched length of the spring. 0.8 m 40⁰ ·00000000000000 B k = 2000 N/m A) 0.6831 m B) 0.7219 m A C) 0.6221 m D) 0.5563 m

7. A 20 kg crate at D is supported by a horizontal spring AB and a cable AC, as shown. Determine the unstretched length of the spring. 0.8 m 40⁰ ·00000000000000 B k = 2000 N/m A) 0.6831 m B) 0.7219 m A C) 0.6221 m D) 0.5563 m

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7. A 20 kg crate at D is supported by a horizontal spring AB and a cable AC, as shown. Determine the unstretched length of the spring. 0.8 m 40° ·00000000000000 B k = 2000 N/m A) 0.6831 m B) 0.7219 m A C) 0.6221 m D) 0.5563 m
Transcribed Image Text:7. A 20 kg crate at D is supported by a horizontal spring AB and a cable AC, as shown. Determine the unstretched length of the spring. 0.8 m 40° ·00000000000000 B k = 2000 N/m A) 0.6831 m B) 0.7219 m A C) 0.6221 m D) 0.5563 m
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