An electric motor rotating a workshop grinding wheel at 1.10 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.08 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)?

a) It will take about 5.54 seconds for the wheel to stop turning.b) It will rotate for 31.8 radians…

Answered: An electric motor rotating a workshop…

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 20PQ: A wheel starts from rest and in 12.65 s is rotating with an angular speed of 5.435 rad/s. a. Find...

See similar textbooks

Related questions

Question

100%

An electric motor rotating a workshop grinding wheel at 1.10 10² rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.08 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)?

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

Expert Solution