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16 August, 06:42

Under normal conditions, you are just barely able to lift a mass of 74 kg. Your friend drops a box of volume 2.4 m3 into a lake. If you are just able to lift it to the surface (so that it is still completely submerged), what is the mass of the box

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  1. 16 August, 06:58
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    mass=2326kg

    Explanation:

    Archimedes' principle states that when an object is submerged into a liquid, it appears lighter in weight due to the buoyant force applied by the liquid in upward direction. Buoyant force is equal to the weight of the liquid displaced by the object. An object floats on the surface of liquid or floats partially submerged when weight of the displaced liquid is greater than weight of the object.

    the mass f he box=74kg

    densty=mass / vlme

    1000=mass/2.4

    mass = 2400kg

    apparent mass wen completely submerged will be

    2400-74kg

    mass=2326kg
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