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The minimum force required just to move ...

The minimum force required just to move a block on a rough horizontal surface is 10 N An applied force of 5 N fails to move the block. What are the values of static friction and dynamic friction ?

Text Solution

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Static friction = 5 N Dynamic friction is slightly les than 10 N .
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Knowledge Check

  • The minimum force required just to move a block on a rough horizontal surface is 5N The block fails to move when a force of 3N is applied on it Static frition is .

    A
    `5N`
    B
    `3N`
    C
    `4N`
    D
    `zero`

  • A block is in limiting equilibrium on a rough horizontal surface. If the net contact force is sqrt(3) times the normal force, the coefficient of static friction is

    A
    `sqrt2`
    B
    `(1)/(sqrt2)`
    C
    0.5
    D
    `(1)/(sqrt3)`

  • A force of 49 N just able to move a block of wood weighing 10 kg on a rough horizontal surface , then coefficient of friction is

    A
    `1/2`
    B
    `1/4`
    C
    `1/6`
    D
    `1/8`

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