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When a body is moving on a surface, the ...

When a body is moving on a surface, the force of friction is called

A

Static friction.

B

Dynamic friction.

C

Limiting friction.

D

Rolling friction.

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Maximum force of friction is called

    A
    Limiting friction
    B
    Static friction
    C
    Sliding friction
    D
    Rolling friction

  • A force of 100N acts on a ball moving on a surface. The force of friction that must act between the surface of the ball and the surface so that the ball keeps on moving with constant velocity over the surface must be

    A
    0
    B
    100N
    C
    200N
    D
    300N

  • Assertion : Friction always opposes the motion. Reason : Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.

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

    • Similar Questions

    Explore conceptually related problems

    Assertion : Angle of repose is equal to angle of limiting friction. Reason : When the body is just at the point of motion, the force of friction in this stage is called as limiting friction.

    Which of the following is not true about Frictional force ? A. Friction is the force which opposes the relative motion of two surface in contact B. The force of friction that acts when a body is moving (sliding) on a surface is called sliding friction. C. Friction in machines wastes energy and also causes wear and tear. D. Rolling friction is much more than sliding friction, the use of ball bearing in a machine considerably reduces friction.

    When a body moves on a circular path, the force that acts on the revolving body towards the center is called:

    When a body moves on a circular path, the force that acts on the revolving body towards the center is called :

    (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 .

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