The shaft of a motor rotates at a constant angular speed of 360rev/min. The angle turned through in 1 sec in radians is?
Correct answer: D. 12π
- A. π
- B. 3π
- C. 6π
- D. 12π
Explanation
The number of revolutions in one second = 360/60This is equal to 6 revolutions in 1 second. For each complete revolution, the angle turned is 360˚ or 2π radians. So for 6 revolutions, the angle turned will be 2π x 6 = 12π.
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About Angular Displacement
Angular displacement measures the change in a body’s angular position and is expressed in radians or degrees, with anticlockwise and clockwise directions assigned signs. It connects to arc length, angular velocity and angular acceleration, and must be distinguished from ordinary linear displacement in rotational motion.
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