The centripetal acceleration of an object moving along a circle of radius 'r' with an angular speed 'w' is given by the formula:
Correct answer: A. a= r W2
- A. a= r W2
- B. a= r W
- C. a = r² W
- D. a= r² W²
Explanation
Centripetal acceleration increases with radius and is also affected more significantly when angular speed increases, as it is squared.
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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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