The angular acceleration is equal to linear acceleration when _.
Correct answer: C. r=1
- A. r=maximum
- B. r=0
- C. r=1
- D. None of these
Explanation
Linear acceleration (a) and angular acceleration (α) are related by the equation: a = α x r Hence if r = 1, a= α.
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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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