What pressure does a 60 kg skater exert on the ice if one skate is 40 cm long and the blade is 3 mm wide?

m = 60 kg
g = 10m / s2
a = 40 cm = 0.4 m
b = 3 mm = 0.003 m
P-?
Pressure P is the force F with which it acts on a unit area S P = F / S. The force of gravity of the Earth F = m * g acts on the skater. Let us find the area on which this force acts, since the plane of the blade has a rectangular shape, then the area of one blade will be a * b. And we have 2 such blades, so S = 2 * a * b. P = m * g / 2 * a * b = (60 kg * 10m / s2) / (2 * 0.4m * 0.003m) = 600 / 0.0024 = 250,000 Pa.
Answer: pressure 250,000 Pa.