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physics

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When you push a 2.05 kg book resting on a tabletop it takes 2.45 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the tabletop? static? kinetic?

  • physics - ,

    F1 = force to start movement
    μs = coefficient of static friction
    F2 = force to maintain movement
    μk = coefficient of kinetic friction
    m = mass

    The coefficients of friction are defined as follows:

    F1 = μs*mg
    F2 = μk*mg

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