Question
12. The tub of a washer goes into its spin cycle, starting
from rest and gaining angular speed steadily for 8.00 s,
at which time it is turning at 5.00 rev/s. At this point,
the person doing the laundry opens the lid, and a
safety switch turns off the washer. The tub smoothlv
slows to rest in 12.0 s. Through how many revolutions
does the tub turn while it is in motion?

Image Transcription

12. The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 8.00 s, at which time it is turning at 5.00 rev/s. At this point, the person doing the laundry opens the lid, and a safety switch turns off the washer. The tub smoothlv slows to rest in 12.0 s. Through how many revolutions does the tub turn while it is in motion?

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Kinematics

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