Stuck on Physics Homework: Q3 Part C

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Homework Help Overview

The discussion revolves around a physics homework problem related to dynamics in a rotating frame, specifically focusing on part c of question 3 from a homework assignment. Participants express confusion regarding the concepts involved and the reasoning presented in the textbook.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • The original poster attempts to understand the implications of the rotating frame and its non-inertial nature. Some participants question the reasoning in the textbook regarding the direction of deflections, while others reference the Coriolis force and conservation of angular momentum as relevant concepts.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some guidance has been offered regarding the nature of the Coriolis force, but there is no explicit consensus on the correct approach or understanding of the question.

Contextual Notes

There is mention of a potential error in the textbook, and participants are considering sharing additional resources to clarify the concepts discussed. The original poster expresses uncertainty about the material covered in parts a and b of the question.

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Homework Statement


http://www.physics.oregonstate.edu/~mcintyre/COURSES/ph429_S06/hw1.pdf

See question 3. I am really stuck trying to answer part c. I looked over the solutions to parts a and b and I really just cannot figure out what is going on. This is very weird.


Homework Equations





The Attempt at a Solution

 
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a rotating frame is not an inertial reference frame
 
thanks, but I really don't see how that answers the question

In fact, I think that Marion and Thornton make an error in their book. There is no reason why the deflections should be in different directions. Does anyone have the book? If not, I can scan the relevant section which is like 2 pages long if someone agrees to read it.
 
Last edited:
The Coriolis force is proportional to vector velocity, which changes sign.
You can also see this using conservation of angular momentum.
 

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