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Work Done lifting a chain

  1. Oct 13, 2007 #1
    How much work is done lifting a 25-ft chain over the side of a building? Assume that the chain has a density of 4 lb/ft. Hint: Break up the chain into N segments, estimate the work performed on a segment, and compute the limit as N approaches infinity as an integral.


    (The small segment of the chain of length delta y located y feet from the top is lefted through a vertical distance y.)

    Force = g*density*volume...?

    whats the volume of a segment of the chain, im having difficulty.


    please help
     
  2. jcsd
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