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m = 300 kg
g = 10 m/s²
A = p . l = 1,5 m . 1 m = 1,5 m²
Dit : P
Jawab :
F = m . g
= 300 . 10
= 3000 N
P = F/A
= 3000 N / 1,5 m²
= 2000 N/m²