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A cylindrical water tank has a radius of 2 feet and a height of 6.0 feet. Compute the work done to pump the water out of a filled tank through the top. [The density of water is 62.4 lbs/ft3.]

  • Calculus -

    Height of tank=
    Total volume of water
    Total mass
    Average height raised
    h=H/2 (from centre of gravity to top)
    Total work done
    g=acceleration due to gravity
    =32.2 ft.s-2

    If the water is supposed to load a truck below the tank, a pump is necessary to start filling the hose to the top and down, after that, water will flow up the tank, and down to the truck by gravity.

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