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Homework Statement
A chain hangs verticaly from a building. The chain is 30 ft long and is 5 lb/ft3, how much work is needed ot lift the bottom of the chain to the top.
Homework Equations
If you put the axis where the chain is hanging your limits would be 0 and -30
The Attempt at a Solution
So I tried [tex]\int[/tex][tex]^{0}_{-30}[/tex]5/30y dy
Then I get 1/12y2 and solve it for 0 and -30 and get 75 lb/ft, but it doesn't seem right.
(sorry if I didnt use the templete right, I'm a noob at this)