The length of the ridge blade is 20 cm and its width is 4 mm. skater weighing 50 kg, performs a swallow

The length of the ridge blade is 20 cm and its width is 4 mm. skater weighing 50 kg, performs a swallow, puts pressure on the ice.

Skate blade pressure on ice – the ratio of the force with which the skater’s mass presses on the ice surface to the value of the area of the skate blade.
P = F / S, F – skater weight (F = m * g, m – skater weight (m = 50 kg), g – gravitational acceleration (g = 10 m / s ^ 2)), S – blade surface area ridge (S = a * b, a = 20 cm = 0.2 m, b = 4 mm = 4 * 10 ^ -3 m).
Let’s calculate the skater’s pressure on the ice:
P = F / S = m * g / S = 50 * 10 / (0.2 * 4 * 10 ^ -3) = 625000 Pa = 625 kPa.
Answer: The skater puts pressure on the ice equal to 625 kPa.