Finding force of friction with only applied force and acceleration given?

1. The problem statement, all variables and given/known data
What is the value of the force of friction?
Acceleration = 1m/s^2
Applied force = 5.5N



2. Relevant equations
:confused:



3. The attempt at a solution
:confused:

I know what to do if mass or a coefficient of friction were given, but unfortunately they're not!

Any help will be appreciated...
 

Kurdt

Staff Emeritus
Science Advisor
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Are you sure there is no other info given?
 

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