Rotation Problem Involving Two Disks

  • Thread starter Thread starter Bashyboy
  • Start date Start date
  • Tags Tags
    Rotation
Click For Summary
SUMMARY

The discussion focuses on solving a physics problem involving two disks and their rotational inertias. Participants confirm that it is valid to treat the two disks as one by summing their rotational inertias, utilizing the formula I = Ʃmr². This approach allows for a clear breakdown of the system into two parts, facilitating the calculation of the total rotational inertia. The consensus emphasizes the importance of understanding the distribution of mass in both disks for accurate results.

PREREQUISITES
  • Understanding of rotational inertia and its calculation
  • Familiarity with the formula I = Ʃmr²
  • Basic knowledge of physics principles related to rotational motion
  • Ability to analyze systems with multiple components
NEXT STEPS
  • Study the concept of rotational inertia in detail
  • Learn about the moment of inertia for different shapes and configurations
  • Explore examples of composite systems in rotational dynamics
  • Investigate the effects of mass distribution on rotational motion
USEFUL FOR

Students studying physics, particularly those focusing on mechanics, as well as educators looking for examples of rotational dynamics involving multiple objects.

Bashyboy
Messages
1,419
Reaction score
5

Homework Statement


I attached the problem as a word file.


Homework Equations





The Attempt at a Solution



I think I will be able to solve this problem; my only questions is, can I treat the two disks as one, by summing their rotational inertias together?
 

Attachments

Physics news on Phys.org
Yes. That's correct. I = Ʃmr2 where the sum is over all the particles in the system. You can break the sum into two parts, one part for the first disk and the other part for the second disk.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
26
Views
2K
Replies
6
Views
3K
Replies
28
Views
5K
Replies
11
Views
4K
  • · Replies 10 ·
Replies
10
Views
3K
Replies
17
Views
1K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 37 ·
2
Replies
37
Views
3K