The centripetal acceleration produced in a rotating body is commonly due to change on_________of body?
Correct answer: B. direction
- A. magnitude
- B. direction
- C. both
- D. None of these
Explanation
In uniform circular motion, the speed's magnitude remains constant but its velocity changes direction continuously, producing centripetal acceleration toward the centre. The likely mistake is choosing both, which would apply only if the body's speed were also changing.
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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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