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What is the minimum force that needs to ...

What is the minimum force that needs to be applied on a body of mass 100 g, kept on a horizontal surface, to set the body in motion? Given, coefficient of friction between the surface and the body is 0.4 and the force acts parallel to the surface.

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The correct Answer is:
39200 dyn
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Knowledge Check

  • A boy of mass M is applying a horizontal force to slide a box of mass M' on a rough horizontal surface. The coefficient of friction between the shoes of the boy and the floor is mu and that between the box and the floor is mu '. In which of the following case it is certainly not possible to slide the box?

    A
    `mu lt mu',MltM'`
    B
    `mugtmu',MltM'`
    C
    `multmu',MgtM'`
    D
    `mugtmu',MgtM'`

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