Q. The angular speed of seconds needle in a mechanical watch is
A) $\frac{\pi}{30}\ rad/s$
B) $2\pi\ rad/s$
C) $\pi\ rad/s$
D) $\frac{60}{\pi}\ rad/s$
Explanation
(a) $\omega = \frac{2\pi}{T} = \frac{2\pi}{60} = \frac{\pi}{30}\ rad\ /s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.