Answer :

Given data-


t = time = 4 s.


Final angular velocity,=100 revs/s .


= angular acceleration


We know -



Since initially, the wheel is at rest,





Now, we need the calculate the angle rotated during 4 seconds


Using the second equation of kinematics.



Where,


θ = total angle rotated


= initial angular velocity


t = time period


=acceleration






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