A 012-M Radius Grinding Wheel Takes 2

question 5

Multiple Choice

A 0.12-m radius grinding wheel takes 2.1 s to speed up from 2.0 rad/s to 11.0 rad/s.What is the wheel's average angular acceleration?

• A) 9.6 rad/s²
• B) 4.3 rad/s²
• C) 1.6 rad/s²
• D) 0.33 rad/s²

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