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Answer to Question #20839 in Electric Circuits for Leandra

Question #20839
A force of 38.0 N accelerates a 5.0-kg block at 5.7 m/s2 along a horizontal surface; how large is the friction force and what is the coefficient of friction?
Expert's answer
Ffr=F-ma=38-5.0*5.7=9.5 N& --the friction force
mu - the coefficient of friction
mu = Ffr/N
mu = Ffr/mg=9.5/(5*10)=0.19

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