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What is friction ?...

What is friction ?

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Knowledge Check

  • In general viscous force is some what like friction as it opposes the motion and is a non-conservative force, but not exactly so, because.

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

  • A body of mass 100g is sliding on a inclined plane with an inclination of 60^(@) . What is the frictional force experienced, if coeficient of friction is 1.7? (Take g=10m//s^(2) )

    A
    0.85N
    B
    0.95N
    C
    1.05N
    D
    1.145N

  • A body of mass 100 g is sliding from an inclined plane of inclination 30^(@) . What is the frictional force experienced if mu=1.7 .

    A
    `1.7xxsqrt(2)xx(1)/(sqrt(3))N`
    B
    `1.7xxsqrt(3)xx(1)/(2)N`
    C
    `1.7xxsqrt(3)N`
    D
    `1.7xxsqrt(2)xx(1)/(3)N`

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    The friction of a radioactive sample which remains active aftertime t is (9)/(16) . What friction remains active after (t)/(2) time?

    Using a horizontal force 200N , we intend to move a wooden cabinet across a floor at constant velocity. What is the frictional force that will be exerted on the cabinet?

    Using a horizontal force of 200 N, we intend to move a wooden cabinet across a floor at a constant velocity. What is the friction force that will be exerted on the cabinet.

    Consider a cylinder of mass M resting on a rough horizontal rug that is pulled out from under it with acceleration 'a' perpendicular to the axis of the cylinder. What is F_("friction") at point P ? It is assumed that the cylinder does not slip.

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