The angular speed of second's hand of a watch in rad/s is:
Correct answer: C. π/30
- A. π/3
- B. π/6
- C. π/30
- D. π/12
Explanation
Angular speed is the rate at which an object moves around a circle. In this case, the second's hand completes one full rotation in 60 seconds. Since 2π radians is a full circle, the angular speed of the second's hand is calculated as (2π radians) / (60 seconds) = π/30 rad/s. This is why option C, π/30, is the correct answer. The other options, π/3, π/6, and π/12, are incorrect as they do not represent the angular speed of the second's hand accurately.
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