The centripetal acceleration is maximum when radius r is:
Correct answer: B. Decreasing
- A. Increasing
- B. Decreasing
- C. Constant
- D. None of these options are correct
Explanation
We know that centripetal acceleration (a) = v2/r where v is the linear speed and r is the radius. If v is constant, then a is inversely proportional to r. So, a will be maximum when r is decreasing.
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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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