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energy problem



You may have already seen this in The Physics Teacher (Nov. 2001),
but in case you missed it, here's a problem which might amuse you:

A long uniform chain is hung over a frictionless pulley. The left
part of the chain rest on a table, and the right part rests on the
floor. Soon after the chain is released, it reaches a constant speed.
Find that speed, given that the table is height h above the floor.

The solution using momentum is given in the Feb. 2002 issue. Your
assignment is to find a solution using energy. I'd be interested in
hearing from anyone who wants to take a crack. Carl
--
Carl E. Mungan, Asst. Prof. of Physics 410-293-6680 (O) -3729 (F)
U.S. Naval Academy, Stop 9C, Annapolis, MD 21402-5026
mungan@usna.edu http://physics.usna.edu/physics/faculty/mungan/