A siren can be made by blowing a jet of air through 20 equally spaced holes in a rotating disk. The time it takes for successive holes to move past the air jet is the period of the sound. The siren is to produce a 2,200 Hz tone. What must be the angular speed (omega) in rad/s of the disk?© BrainMass Inc. brainmass.com March 4, 2021, 5:41 pm ad1c9bdddf
A 2,200 Hz tone will have a period of 1 / 2,200 seconds.
Each rotation of the disk will be ...
This solution calculates the angular speed of a rotating disk to produce a siren with a 2,200 Hz tone.