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28 March, 18:25

A 2-kg plastic tank that has a volume of 0.2m^3 is filled with water. Assuming the density of water is 999 kg/m 3; determine the weight of the combined system.

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  1. 28 March, 18:40
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    Mass of the combined system = 201.8 Kg

    Weight of the combined system = 1977.64 N

    Explanation:

    Given:

    Mass of the plastic tank = 2 kg

    Volume of the plastic tank = 0.2 m³

    Density of water = 999 Kg/m³

    Now, the volume of water in the tank = volume of tank = 0.2 m³

    Also,

    Mass = Density * Volume

    therefore,

    Mass of water = 999 * 0.2 = 199.8 Kg

    Thus, the combined mass = Mass of tank + Mass of water in the tank

    or

    the combined mass = 2 + 199.8 = 201.8 Kg

    Also,

    Weight = Mass * Acceleration due to gravity

    or

    Weight = 201.8 * 9.8 = 1977.64 N
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