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A whistle emitting a sound of frequency ...

A whistle emitting a sound of frequency `440 Hz` is tied to a string of `1.5 m` length and roated with an angular velocity of `20 rad//s` in the horizontal plane. Calculate the range of frequencies heard by an observer stationed at a larger distance from the whistle .(Speed of sound =`330 m//s)` .

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484 Hz to 403 Hz
`V_m "in"=V_0((v)/(V+V_s))=440 ((330)/(330+30))= 403 Hz`
`V_m "in"=V_0((v)/(V-V_s))=440 ((330)/(330-30))= 484 Hz`
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