What is the weight of a 0.5 m3 concrete slab in water?

In this case, the weight will be the difference between the force of gravity of the Earth and the force of Archimedes
P = Ft-Fa = g (m + pwaterV) = g (V (pconcrete + pwater)) = 10 (0.5 (1000 + 2000)) = 15 kN



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