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## Homework Statement

Suppose the coefficient of kinetic friction between m

_{1}and the plane in the figure is μ

_{k}=0.20, and that m

_{1}=m

_{2}=2.2kg.

a) As moves down, determine the magnitude of the acceleration of m

_{1}and m

_{2}given θ=28

^{o}.

b) What smallest value of μ

_{k}will keep this system from accelerating?

## Homework Equations

F=ma

## The Attempt at a Solution

I am not sure even where to begin.