In-Class Worksheet #14 - UC Santa Barbara

1) An old record player rotates clockwise at 33 1/3 rpm (revolutions per minute). a) What is its angular velocity in rad/s? b) Find the period of a record that is rotating at 45 rpm. a) We just need to do unit conversions: b) We can just convert to revolutions/sec, then take the reciprocal: sec 0.75rev 60sec 1min min 45rev ⋅ = rev sec sec rev ... ................
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