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 = 60kg
a = 0.4m
b = 0.003m

P-?

decision
S = a * b
S = 0.4 * 0.003 = 0.0012sq.m
F = mg
F = 60 * 10 = 600 N
P = F / S
P = 600 / 0.0012 = 500000 Pa = 500 kPa
answer: P = 500 kPa
Option 2
p = F / S
F = mg
F = 60kg. 10N / kg = 600N
S = 0.4.0.003 = 0.0012
P = 600 / 0.0012 = 500000Pa the pressure on the ice is 500 kPa or 500000Pa