A) 0.82rad/s
B) 0.105 rad/s
C) 0.21 rad/s
D) 0.052 rad/s
Correct Answer: B
Solution :
Key Idea: Time period of a seconds hand watch is 60 s. In analogy with the concept of velocity for linear motion, the angular velocity for rotational motion can be defined as: Average angular velocity = Change in angular position over time Also time period of second's hand in a watch is 60 s. \[\therefore \] \[\omega =\frac{2\pi }{T}=\frac{2\times 3.14}{60}=0.105\,\text{rad/s}\]
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