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The coefficient of friction between two ...

The coefficient of friction between two surface is 0.2. The maximum angle of friction is

A

`sin^(-1)(0.2)`

B

`cos^(-1)(0.2)`

C

`tan^(-1)(0.1)`

D

`cot^(-1)(5)`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Static friction between two surfaces

    A
    prevents the relative motion between them
    B
    opposite to the direction of motion of them
    C
    acts in opposite direction of applied force
    D
    Both (a) and ( c)

  • The coefficient of static friction between two surfaces depend on

    A
    nature of surface
    B
    the shape of the surface in contact
    C
    the area of contact
    D
    all of the above

  • A block of mass 50 kg slides over a horizontal distance of 1m. If the coefficient of friction between their surface is 0.2, then work done against friction is (take g = 9.8 m//s^(2) ) :

    A
    98 J
    B
    72 J
    C
    56 J
    D
    34 J

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