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general physics

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A tank contains mercury, whose density is 13 600 kg/m3. Find the force exerted by the mercury on a circular plug at the bottom of the tank. The plug has a diameter of 2.54 cm, and is located 37.6 cm below the surface of the mercury.

  • general physics - ,

    volume of cylinder above the plug

    V=AreaPlug*heightmercury (note volume in cm^3)

    change volume to meters cubed

    Vm^3=V/1E6

    now the weight of the mercury in that cylinder is density*g*volume

    force=that weight

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