a)
b)
Powtórnie.
Dane:
V = 10 m ³
d = 1,3 kg/m³
g = 10 N/kg
Szukane:
m = ?
F = ?
d = m/V ⇒ m = V · d
m = 10 m³ · 1,3 kg/m³ = 13 kg
F = m · g
F = 13 kg · 10 N/kg = 130 N
S = 10 m²
pa = 1000 hPa = 100 000 Pa = 100 000 N/m²
Fn = ?
p = Fn/S ⇒ Fn = p · S
Fn = 100 000 N/m² · 10 m²
Fn = 1 000 000 N = 1000 kN = 1 MN
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a)
b)
Powtórnie.
a)
Dane:
V = 10 m ³
d = 1,3 kg/m³
g = 10 N/kg
Szukane:
m = ?
F = ?
d = m/V ⇒ m = V · d
m = 10 m³ · 1,3 kg/m³ = 13 kg
F = m · g
F = 13 kg · 10 N/kg = 130 N
b)
Dane:
S = 10 m²
pa = 1000 hPa = 100 000 Pa = 100 000 N/m²
Szukane:
Fn = ?
p = Fn/S ⇒ Fn = p · S
Fn = 100 000 N/m² · 10 m²
Fn = 1 000 000 N = 1000 kN = 1 MN