Find μk between the block and the inclined plane?

AI Thread Summary
To find the coefficient of kinetic friction (μk) between a block and an inclined plane, one can set up equations using the block's acceleration of 3.5 m/s² and the angle of inclination at 27.0°. The mass of the block is not needed as it cancels out in the equations. It is recommended to express all terms in variables before performing numerical calculations. Engaging with the community for guidance can help clarify any confusion in the process.
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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