the tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 9 sec, at which time it is turning at 5 rev/s. at this point, a person opens the lid and the safety turns off the washer. the tub smoothly slows to rest in 14 secs. through how many revolutions does the tub turn while it is in motion?How many revolutions does the tub turn while it is in motion?Speeding up from 0 to 5 revs / sec in 9 seconds
The average number of revs / second is 2.5
2.5 * 9 = 20.5
Slowing down
2.5 * 14 = 35
Total is 20.5 + 35How many revolutions does the tub turn while it is in motion?57.5 revs
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