Centripetal acceleration can be expressed as
Correct answer: D. All of these
- A. v2/r
- B. rω2
- C. vω
- D. All of these
Explanation
Centripetal acceleration is the acceleration directed towards the center of the circle that keeps an object moving in circular motion. The correct answer 'All of these' is accurate because the sum of tangential acceleration (v2/r), radial acceleration (rω2), and the product of linear velocity and angular velocity (vω) together represent the centripetal acceleration in circular motion.
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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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