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OpenStudy (anonymous):
Anna applies a force of 19.5 newtons to push a book placed on a table. If the normal force of the book is 51.7 newtons, what is the coefficient of kinetic friction?
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OpenStudy (gebooors):
The book is moving with constant speed? Then F(Anna) = F(friction) F(friction) = µ mg , in which µ = coefficient of kinetic friction mg = normal force = 51,7 N
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