An electric motor rotating a workshop grinding wheel at 1.13 x 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.93 rad/s². (a) How long does it take the grinding wheel to stop? (b) Through how many radians has the wheel turned during the time interval found in part (a)? Part 1 of 5 - Conceptualize We estimate several seconds for the time it takes the wheel to stop. We estimate many radians for the angular displacement. Part 2 of 5 - Categorize We use the rigid body under constant angular acceleration model. We will use one of the four equations about motion with constant angular acceleration to solve for time and angular displacement. Part 3 of 5 - Analyze We are given the angular acceleration a = 1.93 of rev/min to rad/s2. The conversion is as follows. rev min @₁ = Your response differs from the correct answer by more than 100%. = 113 6.1295 rad/s². The final angular speed is given by @= 0. In order to find the initial angular speed ₁, we need to convert from units X rad rev 1 min 60.0 s. 6.12 x Your response differs from the correct answer by more than 10%. Double check your calculations. rad/s

An electric motor rotating a workshop grinding wheel at 1.13 x 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.93 rad/s². (a) How long does it take the grinding wheel to stop? (b) Through how many radians has the wheel turned during the time interval found in part (a)? Part 1 of 5 - Conceptualize We estimate several seconds for the time it takes the wheel to stop. We estimate many radians for the angular displacement. Part 2 of 5 - Categorize We use the rigid body under constant angular acceleration model. We will use one of the four equations about motion with constant angular acceleration to solve for time and angular displacement. Part 3 of 5 - Analyze We are given the angular acceleration a = 1.93 of rev/min to rad/s2. The conversion is as follows. rev min @₁ = Your response differs from the correct answer by more than 100%. = 113 6.1295 rad/s². The final angular speed is given by @= 0. In order to find the initial angular speed ₁, we need to convert from units X rad rev 1 min 60.0 s. 6.12 x Your response differs from the correct answer by more than 10%. Double check your calculations. rad/s

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter12: Rotation I: Kinematics And Dynamics

Section: Chapter Questions

Problem 15PQ

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Similar questions

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