For a record playing at 45 rpm, find the frequency and the angular velocity.

Question

Frequency=

Angular velocity=

Answer 1

F = 45rev/min = 45rev/60s = 0.75rev/s = 0.75c/s = 0.75 Hz.

Va=45rev/min * 6.28rad/rev * 1min/60s =
4.71 Rad/s.