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n=150
t=60 sekon
v=25m/s
Ditanya : r?
Jawab :
frekuensi= n/t = 150/60 = 2,5 Hz
ω = 2πf
= 2.3,14.2,5
= 15,7 rad/sekon atau 6,28π rad/sekon
v = ω.r
25=15,7.r
25/15,7 = r
1,6 = r