Determine the pressure exerted on the soil by a roller weighing 45kN, if its area is 1500 cm2.

These tasks: P (weight of the roller) = Ft (gravity acting on the roller) = 45 kN; S (area of the roller in contact with the ground) = 1500 cm2.

SI system: Ft = 45 kN = 45 * 10 ^ 3 N; S = 1500 cm2 = 1500 * 10 ^ -4 m2.

The pressure exerted on the soil by the roller is calculated using the formula: P = Ft / S.

Let’s perform the calculation: P = 45 * 10 ^ 3 / (1500 * 10 ^ -4) = 300 * 10 ^ 3 Pa (300 kPa).

Answer: The roller creates a pressure of 300 kPa on the soil.