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A tank is full of water. Find the work required to pump the water out of the spout. Use the fact that water weighs 62.5 lb/ft^3. (Assume r = 6 ft, R = 12 ft, and h= 21 ft.)

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A tank is is half full of oil that has a density of 900 kg/m^3. Find the work W required to pump the oil out of the spout. (Use 9.8 m/s^2 for g. Assume r = 15 mand h = 5 m.)

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Answer #1
same question is answered here

http://www.cramster.com/answers-apr-10/calculus/work-tank-full-water-find-work-required-pumpthe_844435.aspx?rec=0
answered by: seena
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