Question

The equation of a simple harmonic motion is

$X = 0.34\cos(3000t + 0.74)$ where X and t are in mm and sec. The frequency of motion is

• A. 3000
• B. $3000 ⥂ / ⥂ 2\pi$
• C. $0.74 ⥂ / ⥂ 2\pi$
• D. $3000 ⥂ / ⥂ \pi$

Answer 1

Answer: (B)

$3000 ⥂ / ⥂ 2\pi$

Answer 2

From given equation $\omega = 3000,$ ⇒$n = \frac{\omega}{2\pi} = \frac{3000}{2\pi}$