Answer: A barge is in a rectangular lock on a freshwater
Chapter 12, Problem 12.76(choose chapter or problem)
A barge is in a rectangular lock on a freshwater river. The lock is 60.0 m long and 20.0 m wide, and the steel doors on each end are closed. With the barge floating in the lock, a 2.50 * 106 N load of scrap metal is put onto the barge. The metal has density 7200 kg>m3 . (a) When the load of scrap metal, initially on the bank, is placed onto the barge, what vertical distance does the water in the lock rise? (b) The scrap metal is now pushed overboard into the water. Does the water level in the lock rise, fall, or remain the same? If it rises or falls, by what vertical distance does it change?
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