The weight of the chair is 1.8 kg. Determine its pressure on the floor if the area of each of the four legs is 3.2 cm2.

To find out the pressure produced by the specified chair on the floor, we apply the formula: Pst = Ft / S = mst * g / (n * Sn1).

Const: g – acceleration due to gravity (g ≈ 9.81 m / s2).

Data: mst – the mass of the specified chair (mst = 1.8 kg); n is the number of legs (n = 4 legs); Sn1 – the area of each leg (Sn1 = 3.2 cm2; in the SI system Sn1 = 3.2 * 10-4 m2).

Let’s perform the calculation: Pst = mst * g / (n * Sn1) = 1.8 * 9.81 / (4 * 3.2 * 10-4) ≈ 13.8 * 103 Pa.

Answer: The pressure on the floor produced by the specified chair is 13.8 kPa.