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p=cisnienie
Fn=siła nacisku
S=pole powierzchni
pole obu nart:
2*(8cm*1,5cm)=24cm²=0,024m²
siła nacisku:
Q=m*g
Q=70kg*10m/s²
Q=700N
ciśnienie:
p=700N/0,024m²
p≈29166Pa=29,166kPa
p=F/s
F=g∧m
F=10N/kg∧70kg
F=700N
s=2∧(0.08m∧0.1.5m)
s=0.24m²
p=700N/0.24m²
p=2916.67 Pa