November 2018 1 470 Report
Sebuah roda katrol berputar sebanyak 120 putaran per menit. Hitung:
a. Frekuensi
b. Periode
c. Kecepatan sudut
d. Kecepatan linier satu titik pada pinggir roda jika jari jari katrol 150 m

Mohon bantuannya! :)
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