2. A merry-go-round ride at a park consists of a spinning uniform disk of radius 2 m. It is observed that when the angular velocity of the merry-go-round is 4 rad/s, it takes 12 seconds to come to a complete stop when a frictional force of 40 N is applied at the outer edge. Find a value for the mass of the disk assuming no other frictional forces. J 3. Now ignoring any friction assume that a similar merry-go-round of mass 6M is spinning at 3 rad/s with a child of mass M standing at the outside edge (radius R). The child moves to the center of the merry-go-round as it spins. Treating the child as a point mass, find a value for the new angular velocity.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
icon
Related questions
icon
Concept explainers
Question

Please answer 2 and 3, with step by step explanation

2. A merry-go-round ride at a park consists of a spinning uniform disk of radius 2 m. It is observed that
when the angular velocity of the merry-go-round is 4 rad/s, it takes 12 seconds to come to a complete
stop when a frictional force of 40 N is applied at the outer edge. Find a value for the mass of the disk
assuming no other frictional forces.
FK
3. Now ignoring any friction assume that a similar merry-go-round of mass 6M is spinning at 3 rad/s
with a child of mass M standing at the outside edge (radius R). The child moves to the center of the
merry-go-round as it spins. Treating the child as a point mass, find a value for the new angular velocity.
Transcribed Image Text:2. A merry-go-round ride at a park consists of a spinning uniform disk of radius 2 m. It is observed that when the angular velocity of the merry-go-round is 4 rad/s, it takes 12 seconds to come to a complete stop when a frictional force of 40 N is applied at the outer edge. Find a value for the mass of the disk assuming no other frictional forces. FK 3. Now ignoring any friction assume that a similar merry-go-round of mass 6M is spinning at 3 rad/s with a child of mass M standing at the outside edge (radius R). The child moves to the center of the merry-go-round as it spins. Treating the child as a point mass, find a value for the new angular velocity.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 3 images

Blurred answer
Knowledge Booster
Moment of inertia
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON