Home
Class 11
PHYSICS
A block of mass M is held against a roug...

A block of mass M is held against a rough vertical wall by pressing it with a finger. If the coefficient of friction between the block and the wall is `mu` and the acceleration due to gravity is g, what is the minimum force required to be applied by the finger to hold the block against the wall?

A

`mu Mg`

B

`M g`

C

`(Mg )/(mu)`

D

`2 mu M g`

Text Solution

Verified by Experts

The correct Answer is:
C
`(Mg )/(mu)`
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    MTG GUIDE|Exercise AIPMT /NEET (MCQ)|24 Videos

  • LAWS OF MOTION

    MTG GUIDE|Exercise NEET CAFÉ (TOPICWISE PRACTIVE QUESTIONS) (FRICTION)|27 Videos

  • KINEMATICS

    MTG GUIDE|Exercise AIPMT/ NEET MCQs|31 Videos

  • MOTION OF SYSTEM OF PARTICLES AND RIGID BODY

    MTG GUIDE|Exercise AIPMT / NEET (MCQs)|37 Videos

Similar Questions

Explore conceptually related problems

A block of mass M is held against a rough vertical wall by pressing it with a finger . If the coefficient of friction between the block and the wall is mu and the acceleration due to gravity is g , calculate the minimum force required to be applied by the finger to hold the block against the wall.

A block of mass 1 kg is held at rest against a rough vertical surface by pushing by a force F horizontally. The coefficient of friction is 0.5. When

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 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 1 kg is pushed against a rough vertical wall of mu=0.1 For F = 150, 50 or 100 N the force of friction on the blocks is respectively :

A block of weight 5N is pushed against a vertical wall by a force 12 N. The coefficient of friction between the wall and block is 0.6. The magnitude of the force exerted by the wall on the block is

A rough vertical board has an acceleration a so that a 2 kg block pressing against it dows not fall. The coefficient of friction between the block and the board should be

MTG GUIDE-LAWS OF MOTION-CHECK YOUR NEET VITALS
  1. A spring balance carries a load. When the load is pulled aside so that...

    Text Solution

    |

  2. A block of mass m is resting on an inclined plane. The inclination of ...

    Text Solution

    |

  3. A stone tied to a string of length L is whirled in a vertical circle, ...

    Text Solution

    |

  4. A heavy small sized sphere is suspended by a string of length 2. The s...

    Text Solution

    |

  5. A body of mass 5 xx 10^(-3) kg is launched upon a rough inclined plane...

    Text Solution

    |

  6. The coefficient of kinetic friction between a 20 kg box and the floor ...

    Text Solution

    |

  7. A ball of mass 1 kg is thrown upwards with a velocity 10 ms^(-1) If ai...

    Text Solution

    |

  8. A 7 kg shell kept at rest suddenly splits up into three parts. If two ...

    Text Solution

    |

  9. A block released from rest from the top of a smooth inclined plane of ...

    Text Solution

    |

  10. A block of weight 8 kg is resting on a smooth horizontal plane. If it ...

    Text Solution

    |

  11. A stone is dropped from a height h. It hits the ground with a certain ...

    Text Solution

    |

  12. A stream of water flowing horizontally with a speed of 15 m s^(-1) gus...

    Text Solution

    |

  13. Which one of the following statements is not true ?

    Text Solution

    |

  14. A person in an elevator accelerating upwards with an acceleration of 2...

    Text Solution

    |

  15. Two masses of 5 kg and 3 kg are suspended with help of massless inexte...

    Text Solution

    |

  16. A block of mass M is held against a rough vertical wall by pressing it...

    Text Solution

    |

  17. There are four forces acting at a point P produced by strings as shown...

    Text Solution

    |

  18. A metre scale is moving with uniform velocity. This implies

    Text Solution

    |

  19. A 100 kg gun fires a ball of 1 kg horizontally from a cliff of height ...

    Text Solution

    |

  20. A large force is acting on a body for a short time. The impulse impart...

    Text Solution

    |