BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Solutions

Chapter
Section
BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

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 a safety 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.

To determine
The total number of revolutions the tub undergo in the entire accelerating and decelerating process.

Explanation

Given info: The tub accelerates from rest to 5.0revs-1 in a time interval of 8.0s . Then the tub decelerates to rest in 12.0s . The angular acceleration in the entire process is constant.

Explanation:

The angular displacement in an interval is defined as,

Δθ=(ωf+ωi2)t

  • ωf is the final angular velocity in the interval
  • ωi is the initial angular velocity in the interval
  • t is the time interval

For the accelerating interval, substitute 5.0revs-1 for ωf , 0 for ωi and 8.0s for t to determine the angular displacement,

Δθa=(5.0revs-1+02)(8.0s)=1.3×102rad

For the decelerating interval, substitute 0 for ωf , 5

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Beverage consumption represents. a. 19 percent of a young woman's daily calorie intake. b. 7 percent of a young...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

All the human senses have ___. (1.3)

An Introduction to Physical Science

What is the principal component of dietary fiber?

Chemistry for Today: General, Organic, and Biochemistry