Tag: A typical hard disk in a computer spins at 7200 rpm.
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Frequency and Period
A typical hard disk in a computer spins at 7200 rpm. What is the frequency in rev/s? 1 min = 60 seconds 7200 / 60 = 120 rev/s What is the period in seconds? period = 1/7200 = 0.000138 minute = 0.0083 second = 8.3 x 10-3