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Katrol bergerak KM = 2
2. a ) KM = 1
b ) tidak, F = W
c) Mempermudah melakukan kerja
3) a. Katrol A : katrol bergerak
Katrol B : Katrol bergerak kombinasi katrol tetap
b) katrol A KM = 2
Katrol B KM = 2
c) katrol B, karena jumlah katrol semakin banyak semakin mempermudah pekerjaan
d) m = 100 kg
W = m.g
=100. 10
= 1000 N
KM = 2 --> KM = W / F
2 = 1000/ F
F = 500 N