- #1
Sarah00
- 64
- 1
Homework Statement
Homework Equations
Conservation of Energy
The Attempt at a Solution
But it is not in the choices, Any Help?
What is the Work Done on a Rough Incline?
Click For Summary
Homework Help Overview
The discussion revolves around calculating the work done on a block moving up a rough incline, with a focus on the role of friction and energy conservation principles.
Discussion Character
- Exploratory, Assumption checking, Conceptual clarification
Approaches and Questions Raised
- Participants explore the relationship between frictional force and work done, questioning the assumptions regarding mass and its relevance in the calculations. There is a discussion about the correct expression for the frictional force and its application in the context of the problem.
Discussion Status
The conversation is ongoing, with participants providing insights into the role of friction and clarifying concepts related to energy conservation. Some guidance has been offered regarding the nature of frictional force, but no consensus has been reached on the correct approach to the problem.
Contextual Notes
Participants note the absence of mass in the problem statement and discuss its implications for the calculations, indicating that certain assumptions about the system may need to be revisited.
Conservation of Energy
But it is not in the choices, Any Help?
- #2
Nathanael
Homework Helper
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What is the frictional force on the block?
- #3
Sarah00
- 64
- 1
I can't find it, as mass is not given.
But mass is not important in the solution, as it will be canceled from both sides from the equation as shown in my post
But mass is not important in the solution, as it will be canceled from both sides from the equation as shown in my post
- #4
Nathanael
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I know, but what did you take the frictional force to be when you calculated the work? Is it correct?Sarah00 said:
- #5
Sarah00
- 64
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I did, the change in the mechanical energy is equal to work done by fricton
- #6
Nathanael
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So you're saying the frictional force is ##\mu_k mg##? The frictional force is ##\mu_k F_{normal}##
- #7
Sarah00
- 64
- 1
Oh yes! That applies on an object resting on horizontal surface with no vertical component of any force is applied. Thanks!
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