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A block of mass m is held fixed against ...

A block of mass `m` is held fixed against a wall by a applying a horizontal force `F`. Which of the following option is incorrect :
.

A

friction force = mg

B

F will not produce torque

C

normal will not produce torque

D

normal reaction = F

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • A block of mass 'm' is held stationary against a rough wall by applying a force F as shown. Which one of the following statement is incorrect ?

    A
    Friction force `f=mg`
    B
    Normal reaction `N=F`
    C
    F will not produce a torque
    D
    N will not produce any torque

  • A block of mass 0.1 is held against a wall applying a horizontal force of 5N on block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting on the block is:

    A
    2.5N
    B
    0.98N
    C
    4.9N
    D
    0.49N

  • A block of mass m is at rest under the action of force F against a wall as shown in figure. Which of the following statement is incorrect?

    A
    f = mg[f friction force]
    B
    F = N [N normal force]
    C
    F will not produce torque
    D
    N will not produce torque

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