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Assertion: Friction is a self-adjusting ...

Assertion: Friction is a self-adjusting force.
Reason: Friction does not depend upon mass of the body

Text Solution

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The correct Answer is:
D
Only static friction is a self-adjusting force. This is because force of static friction is equal and opposite to applied force (so long as actual motion does not start). Friction force `=mumg` , i.e., friction ddepends on mass.
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Knowledge Check

  • Assertion: Frection is a conservative force. Reason: Fraction does not depend upon mass of the body.

    A
    Assertion is True, Reason is True, Reason is a correct explanation for Assertion
    B
    Assertion is True, Reason is True, Reaosn is not a correct explanation for Assertion
    C
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    D
    Assertion is False, Reason is False.

  • Assertion: Static frictional force is a self adjusting force. Reason: Force of static friction does not depend upon the mass of the body.

    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

  • The force of kinetic friction does not depend on

    A
    the relative velocity of the two surfaces in contact.
    B
    nature of the surface in contact.
    C
    normal reaction on the moving body
    D
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