oblicz wartość pracy jaką wykona dźwig budowlany podnosząć 200 cegieł, każda o masie 4 kg na wyskokośći 25m
m = 200 ciegieł * 4 kg = 800 kg
g = 10 m/s²= 10 N/kg
h = s = 25 m
W = ?
W = F * s
F = m *g
W = m *g * s
W = 800 kg *10 N/kg *25 m
W = 200000 J = 200 kJ
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m = 200 ciegieł * 4 kg = 800 kg
g = 10 m/s²= 10 N/kg
h = s = 25 m
W = ?
W = F * s
F = m *g
W = m *g * s
W = 800 kg *10 N/kg *25 m
W = 200000 J = 200 kJ