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physics help please

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The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 6.0 rev/s in 12.0 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 11.0 s. Through how many revolutions does the tub turn during this 23 s interval? Assume constant angular acceleration while it is starting and stopping in revolutions.

  • physics help please -

    The average velocity during slowdown is 3rev/s

    during spinup, it goes: 3rev/sec*12 sec
    during slowdown, it goes:3rev/sec*11sec

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