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The equation of a simple harmonic moti...

The equation of a simple harmonic motion is `pi=0.34cos(3000t+0.74)` where x and t are in mm and s respectively. The frequency of the motion is :

A

3000

B

`0.74//2pi`

C

`3000/2pi`

D

`3000//pi`.

Text Solution

Verified by Experts

The correct Answer is:
C
`x=0.34cos(3000t+0.74)`
Comparing it with `x=r cos (omega t+phi)`
We have `omega=300 s^(-1):.v=(omega)/(2pi)=(3000)/(2pi)` Hz
Correct choice is ( c ).
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