Home
Class 12
PHYSICS
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
Promotional Banner

Topper's Solved these Questions

  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 4 (Level - I)|24 Videos

  • ALTERNATING CURRENT

    MOTION|Exercise EXERCISE - 4 (LEVEL - II)|14 Videos

Similar Questions

Explore conceptually related problems

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

A block of mass 1kg is pressed against a wall by applying a horizontal force of 10N on the block. If the coefficient of friction between the block and the wall is 0.5 ,magnitude of the frictional force acting on the block is

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 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 block of weight W is held against a vertical wall by applying a horizontal force of 75N . The surface3 of the wall is rough. Now (conside mult1)

A block weighs W is held against a vertical wall by applying a horizontal force F. The minimum value of F needed to hold the block is

A block of mass 2kg is held at rest against a rough vertical wall by passing a horizontal (normal) force of 45 N . Coefficient of friction between wall and the block is equal to 0.5. Now a horizontal force of 15 N (tangential to wall) is also applied on the block. Then the block will :

MOTION-10 ROTATIONAL-Exercise - 4 (Level - II)
  1. A block of mass m is held fixed against a wall by a applying a horizon...

    Text Solution

    |

  2. A disc has mass 9 m. A hole of radius R/3 is cut from it as shown in t...

    Text Solution

    |

  3. A particle moves in circular path with decreasing speed. Which of the ...

    Text Solution

    |

  4. A wooden log of mass M and length L is hinged by a frictionless nail a...

    Text Solution

    |

  5. A cylinder of mass m and radius R rolls down an inclined plane of incl...

    Text Solution

    |

  6. Two identical ladders, each of mass M and length L are resting on the ...

    Text Solution

    |

  7. A solid sphere of mass M, radius R and having moment of inertia about ...

    Text Solution

    |

  8. A solid cylinder of mass m and radius r is rolling on a rough inclined...

    Text Solution

    |

  9. A ball moves over a fixed track as shown in the figure. From A to B ba...

    Text Solution

    |

  10. A rectangular plate of mass M and dimension axxb is held in horizonta...

    Text Solution

    |

  11. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

    Text Solution

    |

  12. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

    Text Solution

    |

  13. Two discs A and B are mounted coaxially ona vertical axle. The discs h...

    Text Solution

    |

  14. A small object of uniform density rolls up a curved surface with an in...

    Text Solution

    |

  15. Satement-1: if there is no external torque on a body about its centre ...

    Text Solution

    |

  16. Two cylinders, one hollow (metal) and the other solid (wood) with the ...

    Text Solution

    |

  17. A uniform thin cylindrical disk of mass M and radius R is attaached to...

    Text Solution

    |

  18. A uniform thin cylindrical disk of mass M and radius R is attaached to...

    Text Solution

    |

  19. A uniform thin cylindrical disk of mass M and radius R is attaached to...

    Text Solution

    |

  20. If the resultant of all the external forces acting on a system of part...

    Text Solution

    |