Zelazna belka o objetosci 0,004m3 i ciezarze 2kN wisi na stalowej linie. Jaka bedzie wartosc sily dzialania na line, gdy belka zostanie zanurzona w wodzie?
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dane:
V = 0,004 m³
Fg = 2 kN = 2 000 N
d = 1000 kg/m³
g = 10 m/s²
szukane:
F = ?
Fw = Fg - F
F = Fg - Fw
Fw = d·g·V
Fw = 1000kg/m³·10m/s²·0,004m³ = 40 N
F = 2000 N - 40N
F = 1960 N
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