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7 April, 10:00

The concrete barrier has a weight of 16,500 N. The coefficient of friction between the barrier and the pavement is μs = 0.40. What is the maximum force P that can be applied to the barrier before it starts moving? Consider all possibilities of motion. (show all possibilities in solution report)

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  1. 7 April, 13:16
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    the maximum force P that can be applied to the barrier before it starts moving is 6,600N

    Explanation:

    Step one:

    Applying the equation

    P=uR

    Where P = force needed to overcome friction

    u = coefficient of friction

    R=limiting force

    Step two:

    Given

    R=16,500N

    u=0.4

    Step three:

    Substituting our values into the equation we have

    P=0.4*16,500

    P=6,600N

    Hence the maximum force P that can be applied to the barrier before it starts moving is 6,600N
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