A 0.15-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) 6.8 m/s² C) 28 m/s² D) 14 m/s²

Question

Quizplus · Accepted Answer

The average angular acceleration is (12.0 rad/s - 0 rad/s) / 4.0 s = 3.0 rad/s². The tangential acceleration is the angular acceleration multiplied by the radius: 3.0 rad/s² * 0.15 m = 0.45 m/s².

A 015-M-Radius Grinding Wheel Starts at Rest and Develops an Angular