A whistle emitting a sound of frequency 440 Hz is tied to a string of 1.5m length and…

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

A whistle emitting a sound of frequency 440 Hz is tied to a string of 1.5m length and rotated with an angular velocity of

20 \text{ rad s}^{-1}

in the horizontal plane. Calculate the range of frequencies heard by an observer stationed at a large distance from the whistle.