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In a situation the contact force by a ro...

In a situation the contact force by a rough horizontal surface on a body placed on it has constant magnitude. If the angle between this force and the vertical is decreased, the frictional force between the surface and the body will

A

increase

B

decrease

C

remain the same

D

may increse or decrease

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • Frictional force between two bodies

    A
    increases the motion between the bodies
    B
    destroys the relative motion between the bodies
    C
    sometimes helps and sometimes opposes the motion
    D
    incerases the relative velocity between the bodies

  • The frictional force between two surfaces is independent of

    A
    Nature of surface
    B
    Size of the body
    C
    Area of contact
    D
    Mass of the body

  • The force of friction between two bodies is

    A
    parallel to the contact surface
    B
    perpendicular to the contact surface
    C
    inclined at `30^@` to the contact surface
    D
    inclined at `60^@` to the contact surface

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