Physics

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2 April, 01:36

na drewnianej podłodze znajduje się skrzynka o masie 18 kg. W pewnym momencie pod wpływem siły skierowanej poziomo skrzynia zaczyna poruszać się z przyspieszeniem 0,68 m/s2. Podczas ruchu na skrzynie działa siła tarcia równa 0,2 ciężaru skrzyni. Oblicz wartość tej siły

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