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A 15kg block is pulled by a horizontal force of 50N at constant velocity. what is the coefficient of friction?

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Its pulled along a rough horizontal surface

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  1. coefficient of friction=frictional force/normal force

    normal force=weight=mass x gravity

    frictional force=force exerted

    coefficient of friction=force exerted/weight

    =50N/(mass x gravity)=50N/(15kg x 9.8m/s^2)=0.34

    the coefficient of friction is dimensionless--no unit.

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