Non-conservaite force and Kinetic Energy

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Homework Help Overview

The discussion revolves around the concept of non-conservative forces and their relationship to kinetic energy. The original poster questions whether the presence of a non-conservative force necessarily leads to an increase in kinetic energy.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster expresses confusion about the definition of non-conservative forces and their implications for kinetic energy. Some participants clarify that forces themselves are not conserved, but rather quantities like energy and momentum are. There is a discussion about examples of non-conservative forces, such as friction, and the role of path dependence in work done by these forces.

Discussion Status

The discussion is ongoing, with participants exploring definitions and examples of non-conservative forces. Some guidance has been offered regarding the nature of conserved quantities and the characteristics of non-conservative forces, but no consensus has been reached on the original question.

Contextual Notes

The original poster mentions a lack of access to a complete textbook, which may limit their understanding of the topic. They are awaiting a recommended book for further clarification.

Oliviam12
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Homework Statement


True/False If a non-conservative force acts on an object, its kinetic energy must increase.


Homework Equations


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The Attempt at a Solution


I don't really understand the question, especially the part about a non-conservative force? I thought all forces were conserved, or am I confusing that with something else? However, I think the answer might be True but, the only reasoning behing that is that kinetic energy seems like it would increase over any force...
 
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Forces aren't conserved. Conserved quantities in classical physics include mass, energy, linear momentum, and angular momentum. What does your text say about nonconservative forces? What is a good example of a nonconservative force?
 
I don't really have a text yet... I am taking the class online and the online e-text is incompleate and unhelpful (I ordered a recommended book and it should be in within the week.) But, the only mention of nonconservative forces is "The work done by a nonconservative force depends on the path through which the force acts." and I read online that an example of a nonconservative force is friction.
 
Never mind, I just happened upon it online. Thanks anyway!
 

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