W × lb = F × lf
W = m × g = 60 × 10 = 600 N
lb = 40 cm
lf = 120 cm
600 N × 40 cm = F × 120 cm
F = 600 N × 40 ÷ 120
= 24000 ÷ 120
= 200 N
KM = W ÷ F
= 600 ÷ 200
= 3
KM = 3 F = 200 N (A)
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W × lb = F × lf
W = m × g = 60 × 10 = 600 N
lb = 40 cm
lf = 120 cm
600 N × 40 cm = F × 120 cm
F = 600 N × 40 ÷ 120
= 24000 ÷ 120
= 200 N
KM = W ÷ F
= 600 ÷ 200
= 3
KM = 3 F = 200 N (A)