tolong dijawab pakai rumus ya... thanks!

4.
Panjang linggis = 1.5 m
lb = 25 cm = 0.25 m
lk = 1.5 m - 25 cm = 125 cm = 1.25 m
F = 9.4 x 10^4 N

W/F = lk/lb
[tex] \frac{w}{9.4 \times {10}^{4} } = \frac{1.25}{0.25} \\ w = \frac{9.4 \times {10}^{4} \times 125 \times {10}^{ - 2}}{25 \times {10}^{ - 2} } \\ w = 47 \times {10}^{4} [/tex]
KM = W/F
KM = 47 x 10^4 / 9.4 x 10^4
KM = 5

2.
m = 200 kg
W = m x g
W = 200 x 10
W = 2000 N

a. Katrol tetap, maka KM = 1
KM = W/F
1 = 2000/F
F = 2000 N
b. Katrol bebas, maka KM = 2
KM = W/F
2 = 2000/F
F = 1000 N
c. 4 katrol takal, maka KM = 4
KM = W/F
4 = 2000/F
F = 500 N

Maaf kalau salah