Vehicle weight 1600 kg. At what area of contact between tires and the road is the pressure on the road equal to 400 kPa?

Task data: m (vehicle weight) = 1600 kg; P (pressure that the car must create) = 400 kPa (400 * 10 ^ 3 Pa).

Reference values: according to the condition g (gravitational acceleration) ≈ 10 m / s2.

The area of contact of tires from the considered car with the road is expressed from the formula: P = F / S, whence S = F / P = m * g / P.

Calculation: S = 1600 * 10 / (400 * 10 ^ 3) = 0.04 m2.

Answer: The contact area of the tires with the road should be 0.04 m2.