A 0.21-m radius grinding wheel takes 2.2 s to speed up from 4.0 rad/s to 13.0 rad/s.What is the wheel's average angular acceleration? A) 8.2 rad/s² B) 4.1 rad/s² C) 1.4 rad/s² D) 0.9 rad/s² E) 19.5 rad/s²

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Quizplus · Accepted Answer

The average angular acceleration is calculated using the formula: (final angular velocity - initial angular velocity) / time. Thus, (13.0 rad/s - 4.0 rad/s) / 2.2 s = 4.1 rad/s².

A 021-M Radius Grinding Wheel Takes 2