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m=70kg
s=8cm *1,5m=0,08m *1,5m=0,12 m2 *2 narty=0,24 m2
g=10 N/kg
szukane:
p=?
p= F/s-------F=m *g
p=m *g /s
p= 70kg * 10N/kg :0,24 m2
p=2500Pa=25 hPa