The angular acceleration is similar to
Correct answer: D. none of these
- A. centripetal acceleration
- B. centrifugal acceleration
- C. both a or b
- D. none of these
Explanation
Option D is correct since angular acceleration is not similar to centripetal acceleration or centrifugal acceleration. Option A is incorrect since, in a circular motion, the centripetal acceleration takes the direction towards the center, which varies over the circulation, but the angular acceleration takes the direction of the corkscrew law, which is a fixed direction. Option B is incorrect since the apparent force, equal and opposite to the centripetal force, draws a rotating body away from the center of rotation, caused by the inertia of the body. The acceleration produced in the direction of this force is centrifugal acceleration. The direction of angular acceleration and centrifugal acceleration is not the same. Option C is incorrect since it mentions both A and B which is not the case.
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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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