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h = 10 m F = ? W = F·h
W = 1,5 kJ = 1500 J
Rozwiązanie
W = F·h
F = W/h
F = 1500 J/ 10 m
F = 150 N
Odp. Dźwig pokonuje ciężar 150 N
s-10 m
W-1,5kJ=1500J
Szukane:
F=?
W=F*s
F=W/s
1500J:10m=150N
Odp.: Dźwig pokona 150 N.