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a = 5 cm = 0,05 m
m = 0,1 kg
g ≈ 10 N/kg
Szukane :
d = ?
F = ?
p = ?
Rozwiązanie :
d = m/V
V = a³
F = mg
p = Fn / s
s = a²
V = 0,05 * 0,05 * 0,05 = 0,000125 m³
d = 0,1 / 0,000125 = 800 kg/m³
F = 0,1 * 10 = 1 N
s = 0,05 * 0,05 = 0,0025 m²
p = 1 / 0,0025 = 400 Pa
E , A , B