The strength of a beam is directly proportional to its width and the square of...

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The strength of a beam is directly proportional to its width and the square of its depth but inversely proportional to its length A beam that is 4 inches wide 8 inches deep and 8 feet long can support a weight of 1920 pounds If the same type of beam that is 7 inches wide and 4 inches deep can support 480 pounds how long is the beam The beam is feet long Type a whole number

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