tambahan lagi mohon bantu kawan tolong di jelaskan , langsung rate 5 kok ..

vA = vB
ωA RA = ωB RB
ωB = ωA RA / RB
      = (6,28 rad s⁻¹)(15 cm) / (5 cm) = 18,84 rad s⁻¹

ωA / ωB = (6,28 rad s⁻¹) / (18,84 rad s⁻¹)
ωA : ωB = 1 : 3
Jawaban: A.