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2 January, 14:27

A force equal to 500 N is required to barely move a 100 kg mass on a horizontal surface. Find the static friction coefficient between the object and the surface. Take g=9.8 ms^2.

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  1. 2 January, 16:16
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    The maximum possible force of static friction between two surfaces is given by:

    F = μN

    F = max friction force, μ = coefficient of static friction, N = normal force

    The normal force N equals the object's weight:

    N = mg

    m = mass, g = gravitational acceleration

    Make a substitution:

    F = μmg

    Given values:

    F = 500N, m = 100kg, g = 9.8m/s²

    Plug in and solve for μ:

    500 = μ (100) (9.8)

    μ = 0.51
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