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From: lrb@hpcnof.UUCP
Newsgroups: net.puzzle
Subject: Barge problem
Message-ID: <51100001@hpcnof.UUCP>
Date: Wed, 20-Nov-85 17:17:00 EST
Article-I.D.: hpcnof.51100001
Posted: Wed Nov 20 17:17:00 1985
Date-Received: Thu, 28-Nov-85 23:37:18 EST
Organization: 20 Nov 85 15:17:00 MST
Lines: 24

Suppose a barge carrying a load of scrap iron is floating in one of the locks
of the St. Lawrence Seaway, patiently waiting for the Seaway to re-open.  
(BTW, I heard last month on the news that it is to be closed for *months* 
due to the wall of one lock collapsing, causing losses >$10M to certain 
segments of the Canadian & U.S. economies).  Anyway, suppose the crew of this 
barge is Lithuanian, and after a few months of fruitless waiting they get 
fed up (they don't have valid visas for either the U.S. or Canada, and so 
neither country will let them step off the boat!)  So they mutiny, and in a 
gesture of defiance throw all the scrap metal overboard into the bottom of 
the lock.  The question:

Does the water level in the lock (in relation to the sides of the lock)........
    a) .....go up?
    b) .....go down?
         OR
    c) .....stay the same?
(Assume of course that both ends of the lock are closed to any movement of
water in or out, and it is in effect just a swimming pool.)

---Larry Bruns,  ihnp4!hpfcla!l_bruns  or  hplabs!hpcnof!lrb

"Where, oh where are you tonight?  Why did you leave me here all alone?  I
 searched the world over & thought I'd found True Love.  You met another, and
 *phthhhbt*, you was gone!"