For anti-clockwise rotation, the angular displacement is:
Correct answer: B. Positive
- A. Negative
- B. Positive
- C. Null
- D. Zero
Explanation
For anti-clockwise (or counter-clockwise) rotation, the angular displacement is considered positive. This convention is based on the right-hand rule. If you curl the fingers of your right hand in the direction of the anti-clockwise rotation, your thumb points upwards, which is the conventional positive direction for angular displacement.
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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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