Question

What is the angular speed of wrist watch’s minute needle in rad/s?

Answer 1

∵ Angular velocity
ω = \(\frac{2 \pi}{T}\) rad/s
and the time perod of a minute needle;
1 hour = 3600 s.
∴ ω = \(\frac{2 \pi}{3600}\) rad/s
or ω = \(\frac{\pi}{1800}\) rad/s