Coming home from Greece in the early 1800s, Lady Elgin’s ship sank in the Mediterranean with the famous Elgin marbles aboard. British Navy divers searching for the vessel used a weighted 5,000-L wine barrel with an open bottom as a diving bell in which to rest and get air. If the ship was 30 m under water, how much weight must be added to the barrel to sink it to the sunken ship’s level? (The density of Mediterranean seawater is 1,029kg/m3. The volume of wood used in the barrel is ignored, and the air in the barrel is maintained by pumps of 5,000 L.)