An expression for the coefficient of kinetic friction between the block and the horizontal surface is given as μk = Ff/mg.
The coefficient of kinetic friction is the force of frcition between a moving object and the horizontal surface.
The expression for the coefficient of kinetic friction between the block and the horizontal surface is given as;
Ff = μkFₙ
Ff = μkmg
μk = Ff/mg
where;
Thus, an expression for the coefficient of kinetic friction between the block and the horizontal surface is given as μk = Ff/mg.
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