Question

Angular velocity of second hand of a clock is:

• A. $\frac{\pi }{30}rad/\sec$
• B. $\frac{\pi }{60}rad/\sec$
• C. $\frac{\pi }{15}rad/\sec$
• D. $\frac{\pi }{2}rad/\sec$

Answer 1

Answer: (A)

Second hand of a clock turns through an angle $2\pi$ in 1 minute $(=60\sec )$
$\therefore$ angular velocity $\omega =\frac{2\pi }{60}=\frac{\pi }{30}rad/\sec$