A tank containing oil is in the shape of a downward-pointing cone with its vertical axis perpendicular to ground level. In this exercise we will assume that the height of the tank is h = 8 feet, the circular top of the tank has radius r = 4 feet, and that the oil inside the tank weighs 58 pounds per cubic foot.
Required:
How much work (W) does it take to pump oil from the tank to an outlet that is 5 feet above the top of the tank if, prior to pumping, there is only a half-tank of oil?
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