oblicz jakie cisnienie wywiera na podloze skrzynaia z pisakiem .Masa skrzyni z piaskiem 600 kg ,a pole powierzchni podstawy 0,3m2 .(obliczajac cieżar skrzyni przyimij g=10N/kg
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m = 600 kg
S = 0,3 m²
g = 10 m/s²
p = F/S
F = Q = m*g = 600 kg * 10 m/s² = 6000 N
p = Q/S
p = 6000 N / 0,3 m² = 20 000 Pa = 20 kPa