A body is travelling in a circle of radius 'r' at a speed 'v'. Its centripetal acceleration will be?
Correct answer: C. a= v2 /r
- A. a= r2 / v
- B. a= r / v
- C. a= v2 /r
- D. a= v / r
Explanation
The formula for centripetal acceleration is ac=v2/r.
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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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