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Physics, 18.04.2021 21:10 rina62

I need to solve for the coefficient of friction in this equation and I don't know how to get there. Here is the equation: (M+m)a=mg-μk Mg
Was told to use Kinematics to solve the equation.

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I need to solve for the coefficient of friction in this equation and I don't know how to get there....
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