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4. The uniform beam is supported by two rods AB and CD that have cross- sectional areas of 20 mm and 25 mm, respectively.

4. The uniform beam is supported by two rods AB and CD that have cross- sectional areas of 20 mm and 25 mm, respectively. Determine the intensity of load w so that the average normal stress in each rod does not exceed 350 kPa. (10 points) Solution: B 8 m W D

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