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23 April, 07:32

A cork weigh 2.5 gf in air. When tied to a sinker, the total weight is 20 gf in water. If the sinker alone weighs 25gf in water, find the density of the cork

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  1. 23 April, 08:32
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    0.333

    Explanation:

    Weight of the sinker in water = 25gf

    Weight of cork in air and sinker in water = 25gf + 2.5gf

    = 27.5gf

    Weight of the cork and sinker in water = 20gf

    Loss of weight of cork in water = 27.5 - 20 = 7.5gf

    Rd of cork = weight of cork in air / loss of weight of cork in water

    = 2.5/7.5

    = 1/3

    = 0.333

    Hence the Relative density of the cork is 0.333
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