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The coefficient of friction between two ...

The coefficient of friction between two surface is `mu= 0.8`. The tension in the string as shown in the figure is

A

0 N

B

6 N

C

4 N

D

8 N

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • 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

  • 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)`

  • A mass m rests under the action of a force F as shown in the figure-2.158 on a horizontal surface. The coefficient of friction between the mass and the surface is mu . The force of friction between the mass and the surface is :

    A
    `mumg`
    B
    `mu[mg+(F)/(2)]`
    C
    `(Fsqrt(3))/(2)`
    D
    `mu[mg-(F)/(2)]`

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    A rod of mass M and length L lies on an incline having inclination of theta = 37^(@) . The coefficient of friction between the rod and the incline surface is mu = 0.90 . Find the tension at the mid point of the rod.

    A block of mass m is stationary on a horizontal surface. It is connected with a string which has no tension. The coefficient of friction between the block and surface is m . Then , the frictional force between the block and surface is:

    The block of mass 'm' initially at x=0 is acted upon by a horizontal force F=a-bx as shown in the figure. The coefficient of friction between the surfaces of contact is mu . The net work done on the block is zero if the block travels a distance of ________ .

    A force of 100N is applied on a block of mass 3kg as shown in the figure. The coefficient of friction between the surface and the block is mu=(1)/(sqrt(3) . The friction force acting on the bock is.

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