How many pieces of 250 x 120 x 60 mm bricks were loaded onto the trailer if its weight increased by 3 tons?

To find the required number of bricks loaded on the used trailer, use the formula: n = Δm / m1 = Δm / (ρк * V) = Δm / (ρк * L * B * h).

Variables and constants: Δm – an increase in the mass of the trailer (Δm = 3 t = 3 * 10 ^ 3 kg); ρк – brick density (ρк = 1800 kg / m3); L – brick length (L = 250 mm = 0.25 m); B – width (B = 120 mm = 0.12 m); h – thickness (h = 60 mm = 0.06 m).

Calculation: n = 3 * 10 ^ 3 / (1800 * 0.25 * 0.12 * 0.06) = 926 bricks.

Answer: 926 bricks were loaded.