
Concept explainers
The moment of inertia of a rotating solid disk about an axis through its cm is

The moment of inertia for the disk about the axis parallel to the central axis
Answer to Problem 11Q
Solution:
The required moment of inertia is
Explanation of Solution
Given:
Moment of inertia of the disk about the axis through its center of mass is
Formula used:
The parallel axes theorem tells us that the moment of inertia about an axis parallel to an axis passing through an object’s center of mass is equal to the sum of the moment of inertia about the axis passing through the center of mass and the product of mass and square of the distance between the two parallel axes.
If I’ is the moment of inertia about the parallel axis passing through a point on the edge of the disk and I is the moment of inertia about the axis passing through the center of mass:
Calculation:
Since the radius is the distance between the two axes
Therefore,
Conclusion
Therefore, the moment of inertia about the parallel axis passing through the edge is greater than the moment of inertia about the axis through the center of mass.
Chapter 8 Solutions
Physics: Principles with Applications
Additional Science Textbook Solutions
College Physics: A Strategic Approach (3rd Edition)
Chemistry: Structure and Properties (2nd Edition)
Biology: Life on Earth with Physiology (11th Edition)
Microbiology with Diseases by Body System (5th Edition)
Human Physiology: An Integrated Approach (8th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
- The cylindrical beam of a 12.7-mW laser is 0.920 cm in diameter. What is the rms value of the electric field? V/marrow_forwardConsider a rubber rod that has been rubbed with fur to give the rod a net negative charge, and a glass rod that has been rubbed with silk to give it a net positive charge. After being charged by contact by the fur and silk...? a. Both rods have less mass b. the rubber rod has more mass and the glass rod has less mass c. both rods have more mass d. the masses of both rods are unchanged e. the rubber rod has less mass and the glass rod has mroe massarrow_forward8) 9)arrow_forward
- Lab 8 Part 3 PHET Wave Interface simulation. I am having trouble with this part of the lab.arrow_forwardMick and Rick are twins born on Earth in the year 2175. Rick grows up to be an Earth-bound robotics technician while Mick becomes an intergalactic astronaut. Mick leaves the Earth on his first space mission in the year 2200 and travels, according to his clock, for 10 years at a speed of 0.75c. Unfortunately, at this point in his journey, the structure of his ship undergoes mechanical breakdown and the ship explodes. How old is Rick when his brother dies?arrow_forwardHi, I have canceled, why did you charge me again?arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON





