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For most of the surfaces used in daily l...

For most of the surfaces used in daily life, the frition coefficient is less than 1. Is it always necessary that the friction coefficient is less than 1?

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Knowledge Check

  • Mark the correct statements about the friction between two bodies - (a) static friction is always greater than the kinetic friction (b) coefficient of static friction is always greater than the coefficient of kinetic friction (c ) limiting friction is always greater than the kinetic friction ( d) limiting friction is never less than static friction

    A
    b,c,d
    B
    a,b,d
    C
    a,c,d
    D
    a,b,d

  • (A) : If a body is trying to slip over a surface then friction acting on the body is necessarily equal to the limiting friction . (R) : Static friction can be less than the limiting friction force .

    A
    If both A and R are true and R is the correct explanation of A .
    B
    If both A and R are true but R is not correct explanation of A .
    C
    If A is true but R is false .
    D
    If A is false but R is true

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