A wheel of radius 1m covers an angular displacement of 180°. Its linear displacement is:
Correct answer: A. 3.14 m
- A. 3.14 m
- B. 6.28 m
- C. Pi rad
- D. 0.157 m
Explanation
The following is the solution: S=rθ 1×π=3.14(1) =3.14m
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About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
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