cara kerjanya gimana?

Diketahui :
w = 300 N
lb = 1,0 m
lk = 3 m

Ditanya : F?

Jawab :
F × lk = w × lb
F × 3 = 300 × 1,0
F × 3 = 300
F = 300/3
F = 100 N (C)

Smoga membantu :))

Diket lf = 3m, lw = 1m dan W = 300 N