Question

A whistle emitting a loud sound of frequency 540Hz is whirled in a horizontal circle of radius 2 m and at a constant angular speed of 15 rad per second the speed of sound is 330 m per second the ratio of the highest to the lowest frequency heard by a listener standing at rest at a large distance from the center of the circle is.
give answer with solutions

Answer 1

594 Hz is the correct answer

Answer 2

Dear student

 =30 m/s
 
Now, the whistle will be moving this velocity away from the observer when the whistle is at a right angle to the observer from the center of rotation. Similarly, when the whistle is on the other side of the circle, it will have its maximum velocity away from the observer. To find out the frequency heard by the observer, we say that 
 
For the maximum frequency heard, when the whistle is moving with a velocity right toward the observer, we have (on putting the values)

f=594 Hz

For the minimum frequency heard, we want the case when the whistle is moving directly away from the observer.,  (on putting the values)


 

f=495 Hz

HOPEFULLY THIS WILL HELP YOU

MARK AS BRAINLIEST.....