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Physics
The equation of a simple harmonic motion is X=0.34 cos (3000t+0.74), where X and t are in mm and sec respectively. The frequency of the motion in Hz is:
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Q. The equation of a simple harmonic motion is $ X=0.34\cos (3000t+0.74), $ where X and t are in mm and sec respectively. The frequency of the motion in Hz is:
KEAM
KEAM 2002
A
$ 3000 $
B
$ \frac{3000}{2\pi } $
C
$ \frac{0.74}{2\pi } $
D
$ \frac{3000}{\pi } $
E
$ \frac{3000}{t} $
Solution:
Here, $ \omega =3000 $ $ \Rightarrow $ $ f=\frac{3000}{2\pi }Hz $