A brick measuring 5x10x20 cm is completely submerged in water. Calculate the buoyancy of the brick.

The buoyancy force that acts on the brick is the Archimedes force, which can be calculated using the formula:

Fa = ρ * g * V, where ρ is the density of water (according to the table ρ = 1000 kg / m3), g is the acceleration of gravity (we take g = 10 m / s2), V is the volume of the brick (according to the condition, the dimensions of the brick are 5x10x20 cm ; when translating dimensions from cm to m: V = 0.05 * 0.1 * 0.2).

Let’s make a calculation:

Fa = ρ * g * V = 1000 * 10 * 0.05 * 0.1 * 0.2 = 10 N.

Answer: The buoyant force acting on the brick is 10 N.

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