Answer:
Frequency of vibration will be equal to 720 Hz
Explanation:
It is given that car moves with a speed of 14.4 m/sec
Its mean that car cover 14.4 m in 1 sec
We have to find the frequency of vibration corresponding to this velocity
It is given that car has a tread pattern with a crevice every 2 cm
So number of crevices moved in 1 sec will be equal to [tex]=\frac{14.4}{0.02}=720[/tex]
So frequency of these vibration will be equal to 720 Hz