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Consider a cylindrical barrel that is 300 lt in volume containing concrete of density 2450 kg/m and suspended on a block of foam that

Consider a cylindrical barrel that is 300 lt in volume containing concrete of density 2450 kg/m and suspended on a block of foam that weighs 0.2 kN/m. Calculate the minimum volume of foam that could keep the barrel in fully submerged equilibrium condition and suspended in water (ignore the weight of connecting wire!).

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