Jawabanmu

2014-01-24T17:31:41+07:00
Massa 1 gram = 0,001 kg
kecepatan = 90 putaran/menit
frekuensi = 90/60 Hz = 1,2 Hz
momentum sudut = 2. phi. f = 2 . phi . 1,2 Hz = 2,4 rad/s
1 2 1