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h = 80 - 50 = 30 cm
= 0,3 m
g = 10m/s2
Ph ?
Ph = ρ . g . h
= 1000 . 10 . 0,3
= 3 000 N/m2
= 3 000 Pa
_____________________________
A1 = 0,02 m2
A2 = 0,2 m2
F1 = 50 N
F2 ?
A1 / A2 = F1 / F2
F2 = A2 / A1 . F1
= 0,2 / 0,02 . 50
= 10 . 50
= 500 N