The
tub of a washing machine goes into its spin cycle, starting from
rest and gaining angular speed steadily for 8.00 s, at which time
it is turning at 4.00 rev/s. At this point, the lid of the washing
machine is opened, and a safety switch turns it off. The tub then
smoothly slows to rest in 13.0 s. Through how many revolutions does
the tub rotate while it is in motion?