Explore BrainMass

Explore BrainMass

    Physics - Mechanics - Circular Motion

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 5.0 rev/s in 8.0 s. At this point, the person doing the laundry opens the lid and safely switch turns off the washer. The tub slows to rest in 12.0 s. Through how many revolutions does the tub turn during the entire 20-s interval. Assume constant angular acceleration while it is starting and stopping.

    © BrainMass Inc. brainmass.com March 4, 2021, 9:07 pm ad1c9bdddf

    Solution Preview

    For the start, w1 = 0, w2 = 5 rev/s x 2(pi) radians/rev = 10(pi) = 31.41 rad/s. Angular

    acceleration, alpha = (w2 ?w1)/t = 31.41/8 = 3.93 ...

    Solution Summary

    A Complete, Neat and Step-by-step Solution is provided.