Find μk between the block and the inclined plane?

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Homework Help Overview

The problem involves determining the coefficient of kinetic friction (μk) between a block and an inclined plane, given the block's acceleration and the angle of inclination. The context is rooted in dynamics and frictional forces.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relevance of mass in the equations and suggest that it may cancel out. There are inquiries about the formulas needed to approach the problem.

Discussion Status

Some participants have offered guidance on how to proceed with the problem by suggesting to express the mass as a variable. There is an acknowledgment of the original poster's confusion regarding the necessity of mass in the calculations.

Contextual Notes

The original poster expresses uncertainty about how to find μk without knowing the mass of the block, indicating a potential gap in understanding the relationship between mass and acceleration in this context.

HebrewHammer
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A block accelerates 3.5 m/s2 down a plane
inclined at angle 27.0◦.
The acceleration of gravity is 9.81 m/s2 .
Find μk between the block and the inclined
plane.

I am completely lost. How can I find the μk if I do not know the mass of the block?
 
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The mass term should cancel out of your equations. Try leaving everything in terms of the variables, and save the numerical calculations until the very end.
 
Do you know the 2 forumals used?
 
Welcome to PF!

HebrewHammer said:
I am completely lost. How can I find the μk if I do not know the mass of the block?

Hi HebrewHammer! Welcome to PF! :smile:

As hage567 suggests, call the mass "m", and then do all the equations as usual. :wink:

If you get stuck, show us how far you've got, and then we can see what the problem is. :smile:
 

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