A 020-M Radius Grinding Wheel Starts at Rest and Develops an an Angular

question 59

Multiple Choice

A 0.20-m radius grinding wheel starts at rest and develops an angular speed of 12.0 rad/s in 4.0 s.What is the average tangential acceleration of a point on the wheel's edge?

• A) 0.45 m/s²
• B) 0.60 m/s²
• C) 28 m/s²
• D) 14 m/s²

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