What pressure is exerted on the soil by a concrete slab, the volume of which is 4m3

What pressure is exerted on the soil by a concrete slab, the volume of which is 4m3, if its base is 8m2, and the density of concrete is 2800kg / m3.

Initial data: V (volume of concrete slab) = 4 m3; S (concrete slab base area) = 8 m2.

Constants: g (acceleration due to gravity) = 10 m / s2; according to the condition ρb (concrete density) = 2800 kg / m3.

The pressure exerted on the soil by a concrete slab can be determined by the formula: P = F / S = m * g / S = ρb * V * g / S.

Let’s calculate: P = 2800 * 4 * 10/8 = 14000 Pa or 14 kPa.

Answer: A concrete slab exerts a pressure of 14 kPa on the ground.