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    Mathematics A-Level

    limiting equilibrium

    What limiting equilibrium means in Mathematics A-Level, as defined for AQA, Pearson Edexcel, WJEC.

    Definitions of limiting equilibrium

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    Reference: WJEC

    The state in which friction has reached its maximum possible value F_max = μR and the body is on the point of slipping.
    WJEC · Forces and Newton’s laws (A2 Unit 4: Applied Mathematics B)
    The state in which a body is on the verge or point of slipping, and friction attains its maximum value F = μR.
    WJEC · Forces and Newton’s laws (A2 Unit 4: Applied Mathematics B)
    The state in which a body is at the point of sliding, so that F = μR rather than F < μR.
    Pearson Edexcel · Forces and Newton’s laws (study guide)
    The state in which a body is in equilibrium and is on the point of slipping, so the frictional force has maximum magnitude F = μR.
    Pearson Edexcel · Moments (study guide)
    Equilibrium in which a particle is on the point of slipping, so friction has reached its maximum value F = μR.
    AQA · R: Forces and Newton’s laws (study guide)

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