Can Work, Power, and Energy be Solved Together?

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Homework Help Overview

The discussion revolves around the concepts of work, power, and energy in the context of an object moving under the influence of friction. Participants are exploring how these concepts interrelate when the object stops at an arbitrary point along its path.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants question whether the object retains any energy after stopping due to friction and how to quantify the work done by friction. There is also a discussion about the implications of the object stopping at an arbitrary point versus reaching the bottom of a hill.

Discussion Status

Some participants have provided interpretations of the problem's conditions, while others are still clarifying their understanding of the energy transformations involved. There is no explicit consensus, but several lines of reasoning are being explored.

Contextual Notes

Participants note that the problem does not specify whether the object has reached the bottom of the hill, which raises questions about the assumptions being made regarding energy loss and work done by friction.

thunderhadron
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Hi friend the problem is as such:


Attempt to the question:



Thank you all in advance.
 
Last edited by a moderator:
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If the object stops because of friction, does it have any energy left? So how much work was done by friction?
 
voko said:
If the object stops because of friction, does it have any energy left? So how much work was done by friction?

If the body comes to the bottom of the hill. Then total P.E. "mgh" will be lost due to friction. But The question doesn't state that that the body has come to the bottom of the hill.

Its saying about any arbitrary point on the path midway. Am I taking it in wrong manner?
 
The problem says it slides down and then stops somewhere in the horizontal path. How do you interpret that?
 
Ok then 2mgh. I got it. Thanks for the help voko.
 
Thank you very much friends. I got the answer. Problem has been cleared.
 

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