A subway tunnel is being constructed across the bottom of a harbor. The process involves tugboats that pull floating cylindrical sections (or tubes as they are often called) across the harbor and sink them in place, where they are welded to the adjacent section already on the harbor bottom. The cylindrical tubes are 50 feet long with a diameter of 36 feet. When in place for the tugboats, the tubes are submerged vertically to a depth of 42 feet, and 8 feet of the tube is above the water (sp. gr. = 1.02). To accomplish this, the tubes are flooded with 34 feet of water on the inside. Determine the metacentric height and estimate the righting moment when the tubes are tipped through a heel (list) angle of 4°by the tugboats. (Hint: Assume the location of the center of gravity can be determined based on the water contained inside the tubes and the container weight is not that significant.)
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