Posted by Amanda on Monday, May 4, 2009 at 10:46pm.
Ans in revs.
The tub of a washer goes into its spin
dry cycle, starting from rest and reaching an
angular speed of 5 rev/s in 10.5 s . At this
point the person doing the laundry opens the
lid, and a safety switch turns off the washer.
The tub slows to rest in 5.6 s .
Through how many revolutions does the
tub turn? Assume constant angular accelera
tion while it is starting and stopping. Answer
in units of rev.

Physics  drwls, Monday, May 4, 2009 at 11:13pm
While accelerating, the washer has an average speed of 2.5 rev/s and goes through 2.5x10.5= 26.25 revs.
While decelerating, it has the same average speed for 5.6 s, and turns 14 revs.
Add the two.

Physics  ronan, Wednesday, May 30, 2012 at 2:07pm
how did you get the 2.5 rev/s
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