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F₁ = 180 N
F₂ = 60 N
a = 0,5 m/s²
szukane:
m = ?
F_w = m*a
F_w = |F₁ - F₂| = F₁ - F₂
F₁ - F₂ = m*a
m = (F₁ - F₂)/a
m = (180 N - 60 N)/0,5 m/s² = 120 m/s² * kg/ 0,5 m/s² = 240 kg
m =240 kg