These tasks: V (volume of a silver body thrown into the river) = 1.8 m3.
Reference values: g (acceleration due to gravity) ≈ 10 m / s2; ρw (water density in the river) = 1000 kg / m3.
The buoyancy force acting on the silver body in the river is determined by the formula: Fa = ρw * g * V.
Let’s make a calculation: Fa = 1000 * 10 * 1.8 = 18 * 10 ^ 3 N (18 kN).
Answer: A buoyant force of 18 kN acts on the silver body.
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