Home
Class 11
PHYSICS
A lift is moving down with an accelerati...

A lift is moving down with an acceleration equal to the acceleration due to gravity. A body of mass `M` kept on the floor of the lift is pulled horizontally If the coefficient of friction is `mu` then the frictional resistance offered by the body is .

A

mg

B

`mumg`

C

`2mumg`

D

`zero`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    ERRORLESS |Exercise Fluid Mechanics|19 Videos

  • GRAVITATION

    ERRORLESS |Exercise SET|27 Videos

Similar Questions

Explore conceptually related problems

A body of mass m kept on the floor of a lift moving downwards is pulled horizontally. If mu is the coefficient of friction between the surface in contact, then

A lift is moving downwards with an acceleration equal to g . A block of mass m , kept on the floor of the lift of friction coefficient mu , is pulled horizontally . The friction acting on the block is

In the above question, if the lift is moving upwards with a uniform velocity, then the frictional resistance offered by the body is

A block of mass 2 kg is kept on a rough horizontal floor an pulled with a force F. If the coefficient of friction is 0.5. then the minimum force required to move the block is :-

A lift moving up with an acceleration equal to 1/2th of that due to gravity. What is the apparent weight of a 80 kg man standing in the lift?

A block of mass m is kept on a horizontal table. If the static friction coefficient is mu ., find the frictional force acting on the block.

A lift is moving downwards. A body of mass 2 kg kept on the floor is pulled horizontally and is in motion. If the coefficient of friction between the body and floor is 1 // 2 , find the friction acting on the body if (a) lift is moving with a uniform velocity and (b) lift is moving with acceleration 5 m//s^(2) in the downward direction.

ERRORLESS -FRICTION-MCQ S
  1. If mass of A=10 kg, coefficent of static friction =0.2 coefficient of ...

    Text Solution

    |

  2. A uniform metal chain is placed on a rough table such that the one end...

    Text Solution

    |

  3. A lift is moving down with an acceleration equal to the acceleration d...

    Text Solution

    |

  4. If a ladder weighting 250 N is placed against a smooth vertical wall h...

    Text Solution

    |

  5. Which one of the following statements is correct

    Text Solution

    |

  6. The maximum speed that can be achieved without skidding by a car on a ...

    Text Solution

    |

  7. A car is moving along a straight horizontal road with a speed v(0) . I...

    Text Solution

    |

  8. A block of mass 5kg is on a rough horizontal surface and is at rest. N...

    Text Solution

    |

  9. A body of mass 2 kg is being dragged with uniform velocity of 2 m / s ...

    Text Solution

    |

  10. Two carts of masses 200 kg and 300 kg on horizontal rails are pushed a...

    Text Solution

    |

  11. A body B lies on a smooth horizontal table and another body A is place...

    Text Solution

    |

  12. A 60 kg body is pushed with just enough force to start it moving acros...

    Text Solution

    |

  13. A car turns a corner on a slippery road at a constant speed of 10 m//...

    Text Solution

    |

  14. A motorcyclist of mass m is to negotiate a curve of radius r with a sp...

    Text Solution

    |

  15. On a rough horizontal surface, a body of mass 2 kg is given a velocity...

    Text Solution

    |

  16. A block of mass 50 kg can slide on a rough horizontal surface. The coe...

    Text Solution

    |

  17. A body of 10 kg is acted by a force of 129.4 N if g=9.8m//sec^2. The a...

    Text Solution

    |

  18. Assuming the coefficient of friction between the road and tyres of a c...

    Text Solution

    |

  19. Consider a car moving along a straight horizontal road with a speed of...

    Text Solution

    |

  20. A 500 kg horse pulls a cart of mass 1500 kg along a level road with an...

    Text Solution

    |