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f = 120 rpm = = 20 Hz
r = 35 cm = 0,35 m
V = __ ?
Kecepatan linear titik
V =
V = 44 m/s ← jawaban
Ok ?
220×1.200=264.000cm/menit
264.000/60=4.400cm/s
4.400/100=44m/s
44 : 22/7 =308/22=14π