GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A 0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel’s average angular acceleration?
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9.6 rad/s/s
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4.8 rad/s/s
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3.1 rad/s/s
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1.6 rad/s/s
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Explanation:
Detailed explanation-1: -Answer: The average angular acceleration of the wheel is . Hence, the average angular speed of the wheel which is 0.12 meters in radius is equal to 1.64 rad per square second.
Detailed explanation-2: -In an object, the average angular acceleration is defined as the ratio of change in the angular velocity to the time taken by the object to change considering initial and final point of displacement.
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