Home
Class 11
PHYSICS
Is frictions independent of actual area ...

Is frictions independent of actual area of contact ?

Text Solution

Verified by Experts

Yes , force of friction does not depend upon actual area of contact .
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

Explain with an example how frictional force depends on the area of contact.

Explain with an example how frictional force depends on the area of contact.

Knowledge Check

  • Statement 1 : It is difficult to drive a vehicle at high speed on a rainy day. Statement 2: Friction is independent of the area of contact between the surfaces.

    A
    Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
    B
    Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
    C
    Statement 1 is true but statement 2 is false.
    D
    Both statements 1 and 2 are false.

  • Assertion: Force of friction depends on the actual area of contact. Reason: Larger the area of actual contact, larger is oppose to motion.

    A
    If both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.
    B
    If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.
    C
    If Assertion is Trie but the Reason is False.
    D
    If both Assertion `&` Reason are false

  • Assertion : Force of friction depends on the actual area of contact Reason : Smoother the surfaces of contact smaller is opposition to motion .

    A
    If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion
    B
    If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion
    C
    If Assertion is ture but the Reason is false
    D
    If both, Assertion and Reason are false

    • Similar Questions

    Explore conceptually related problems

    Explain why: Surface tension of a liquid is independent of the area of the surface.

    Choose the correct statements – (1) Force of friction is partically independent of microscopic area of surface in contact and relative velocity between them. (if it is not high) (2) Normally with increase in smoothness friction decreases. But if the surface area are made too smooth by polishing and cleaning the bonding force of adhesion will increase and so the friction will increase resulting in 'Cold welding' (3) Friction is a non conservative force, i.e. work done against friction is path dependent. (4) Force of fricton depends on area

    STATEMENT -1 : Force of friction depends on the actual area of contact . STATEMENT -2 : Centripetal and centrifugal forces always cancel each other . STATEMENT - 3 : A horse cannot run a cart in empty space.

    (A) : Friction forces does not depend on visible area of contact . (R) : Limiting friction force is dependent on normal reaction .

    The force of limiting friction between a body and the surface of contact is 5N A force of 7N is applied on the body and the actual motion starts The effective force of friction now is .

    Home
    Profile