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F = 2N
V = 40 cm³ = 0,00004 m³
g = 10 [m/s²]
ρ = 1000 [kg/m³]
Rozw.:
Siła wyporu:
Fw = ρ × g × V = 1000 [kg/m³] × 10 [m/s²] × 0,00004 m³ = 0,4 N
Siła sprężystości siłomierza
Fs = F - Fw = 2 N - 0,4 N = 1,6 N