# Work required to extract fluid

by Metaleer
Tags: extract, fluid, required, work
 P: 688 Work required to extract fluid or you can set up an integral......look at each differential disk, what is the mass of that disk and how much does it have to be lift? and then, well, $$W=\Delta E=mg\Delta h$$ just a side note... does the question say whether not the density of that cone is uniform? if not then you'll get some additional complications. what do you get for the integrand?