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Unformatted text preview: A is given by A ( y ) = 30 ft 2 . Since the liquid weighs 80 lbs/ft 3 , and at y , the liquid must be lifted 20y ft to reach ground level, thus the work to empty the tank will be given by W = Z 10 80 30 (20y ) dy =2400 (20y ) 2 2 10 =1200(10 220 2 ) = 360000 ....
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This note was uploaded on 04/02/2012 for the course MTH 132 taught by Professor Kihyunhyun during the Fall '10 term at Michigan State University.
 Fall '10
 KIHYUNHYUN
 Calculus

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