Correction pada tutorial answers(vibration)

Dr.azma ader buat pembetulan pd jawanpan tutorial..ini adalah msg drpd dia

I have made mistake in converting RPM (rotation per minute) into angular frequency (radian/sec).
It should be multiplied by 2pi after divided by 60.
1 RPM=(1/60)*2pi [radian/sec]
Please correct this to your tutorial answers (Tutorial 3 and 5) and post this issue in your BLOG so all the students are aware.
Many thanks,

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