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Fk. lk = Wb.lb ---> lb = L - lk
= 5 - 2
= 3
Fk. 2 = 3000. 3
Fk = 3000. 3 / 2
= 4500 N
KM = lk / lb
= 2/3
lk = 2 m
lb = 5 - 2 = 3m
W = 3000N
Ditanya
F dan KM...?
Jawab
F = W/lb x lk
F = 3000.3/2
F = 4500 N
KM = lk/lb
KM = 2/3
KM = 0,67 kali