A person going away from a factory on his scooter at a speedof `36 kmh^-1` listens to the siren of the factory. If the main frequency of the siren is 600 hz and a wind is blowing alongthe direction of the scooter at `36 kmh^-1`, find the main frequency as heard by the person.

Explanation

`{:(rarr v_(s)=0,,rarr underset(=10m//s)(v_(o)=36 km//hr)),(overset(*)(S),,overset(*)(O)),(,rarrv,),(,rarr w,):}`
`omega :` wind speed, `w = 36 km//hr = 10 m//s`
`f' = f((v + w - v_(0))/(v + w - v_(s)))`
`= 600((340 + 10 - 10)/(340 + 10 - 0))`
`= 583 Hz`