A piece slides down a slippery plane plane slowing from 10 km/h to 5km/h -- what is the friction coefficient?

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Homework Help Overview

The discussion revolves around a problem in dynamics involving a block sliding on a horizontal plane, where it slows from an initial speed of 10 km/h to 5 km/h over a distance of 23 m. Participants are exploring the implications of friction and the need for additional information, such as the mass of the block, to solve for the friction coefficient.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express uncertainty about how to approach the problem and question the adequacy of the provided information, particularly the missing mass of the block. There is a suggestion to consider standard equations that may apply to the scenario.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the problem setup and the necessary parameters for solving it. Some have reiterated the problem statement while questioning the absence of specific details, indicating a lack of consensus on how to proceed.

Contextual Notes

Participants note that the problem does not specify the mass of the block, which is seen as a critical piece of information for determining the friction coefficient. Forum rules emphasize the need for showing work, which has led to requests for clarification and additional context.

gladidi
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Homework Statement
the piece is a slippery horizontal plane from 10 km / h. The speed changes due to friction at a distance of 23 m to a final speed of 5 km / h. Determine the coefficient of friction.
Relevant Equations
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I don't know how solve this..

[User has been reminded by the Mentors to show their work on schoolwork problems]
 
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I presume there was a diagram, or maybe just a rather more informative description.

At a guess, the set up is:
"A block slides on a horizontal plane. It starts at speed 10km/h, but friction reduces this to 5km/h over a distance of 23m."

Per forum rules, you need to show an attempt.
What standard equations have you been taught that may be relevant?
 
haruspex said:
I presume there was a diagram, or maybe just a rather more informative description.

At a guess, the set up is:
"A block slides on a horizontal plane. It starts at speed 10km/h, but friction reduces this to 5km/h over a distance of 23m."

Per forum rules, you need to show an attempt.
What standard equations have you been taught that may be relevant?
"A block slides on a horizontal plane. It starts at speed 10km/h, but friction reduces this to 5km/h over a distance of 23m." This is all what is stated in the assignment. I would have solved if the mass had been told ..
 
gladidi said:
"A block slides on a horizontal plane. It starts at speed 10km/h, but friction reduces this to 5km/h over a distance of 23m." This is all what is stated in the assignment. I would have solved if the mass had been told ..
So let the mass be m and see what happens.
 
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