Find μk between the block and the inclined plane?

[HebrewHammer]

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?

 

[hage567]

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.

 

[HebrewHammer]

Do you know the 2 forumals used?

 

[tiny-tim]

Welcome to PF!

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!

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

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