Question

A box has a base area of 1.9 m2.

The box is placed on the ground and exerts a force of 4.7 kN.
What pressure is the force applied with?
Give your answer in kN/m2 and rounded to 2 dp.

Answer 1

The pressure exerted by the box on the ground is given by the force divided by the area of the base. Let's convert the force from kN to N, and the area from m^2 to cm^2, for convenience:

4.7 kN = 4.7 × 10^3 N

1.9 m^2 = 1.9 × 10^4 cm^2

Now we can calculate the pressure:

pressure = force / area

pressure = (4.7 × 10^3 N) / (1.9 × 10^4 cm^2)

pressure ≈ 0.247 kN/m^2

Rounding this to 2 decimal places, we get:

pressure ≈ 0.25 kN/m^2

Therefore, the pressure exerted by the box on the ground is approximately 0.25 kN/m^2.