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p=60kg*10N/kg/0,001m2
p=600N/0,001m2*2=600/0,002
p=600*1000/2=300000Pa=300kPa
s=10cm2=0,001m2
s = 10 cm^2 *2 = 20 cm^2 = 0.002 m^2; powierzchnia dwóch łyżew
g = 10 N/kg
p = ?
p = F/S
1. obl. ciężar łyżwiarza
F = m*g
F = 60 kg*10 N/kg = 600 N
2. obl. ciśnienie
p= 600 N/0,002 m^2
p = 30000 Pa