A girl exerts a 36-N horizontal force as she pulls a 52-N sled across a cement sidewalk at a constant speed. What is the coefficient of kinetic friction between the sidewalk and the metal sled runners? Ignore air resistance. Show steps please.

Question

anonymous · Answer

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as the body is moving with uniform velocity,no forces are acting on it 
so net force=0
so in the vertical direction both forces balance
in the horizontal direction also they balane so
frictional force=36n