Home
Class 11
PHYSICS
If a body of mass m is carried by a lift...

If a body of mass `m` is carried by a lift moving with an upward acceleration `a `, then the forces acting on the body are (i) the reaction `R` on the floor of the lift upwards (ii) the weight mg of the body acting vertically downwards. The equation of motion will be given by

A

`R=mg-ma`

B

`R=mg+ma`

C

`R=ma-mg`

D

`R=mgxxma`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    ERRORLESS |Exercise Third Law of Motion|24 Videos

  • NEWTONS LAWS OF MOTION

    ERRORLESS |Exercise Conservation of Linear Momentum and Impulse|27 Videos

  • NEWTONS LAWS OF MOTION

    ERRORLESS |Exercise Self Evaluation Test|16 Videos

  • MOTION IN TWO DIMENSION

    ERRORLESS |Exercise Exercise|319 Videos

  • ROTATIONAL MOTION

    ERRORLESS |Exercise Practice Problems (Problems based on motion of connected mass)|10 Videos

Similar Questions

Explore conceptually related problems

If an object is moving with a constant acceleration, the net force acting on that body is

A man of mass m is standing on a lift which moves down with an upward acceleration a. Find the pseudo force acting on the man as observed by himself. Find the pseudo force acting on the man if the lift falls freely.

A body of mass 1kg is moving along a straight line with a velocity of 1m//s . The external force acting in the body is

A body of mass 4 kg weighs 4.8 kg when suspended in a moving lift. The acceleration of the lift is

An observer is standing inside a lift moving upwards with an acceleration a. A mass m is lying on the floor of the lift. Find the normal reaction between the block and the floor.

The mass of a lift if 600kg and it is moving upwards with a uniform acceleration of 2m//s^(2) . Then the tension in the cable of the lift is :

The mass of a lift is 600 kg and it is moving upwards with a uniform acceleration of 2m//s^(2) . Then the tension in the cable of the lift is-

A man of mass m is standing on the floor of a lift. Find his apparent weight when the lift is moving downwards with uniform acceleration a.

ERRORLESS -NEWTONS LAWS OF MOTION-Second Law of Motion
  1. A thief stole a box full of valuable articles of weight W and while ca...

    Text Solution

    |

  2. N bullet each of mass m kg are fired with a velocity v ms^-2 at the ra...

    Text Solution

    |

  3. If a body of mass m is carried by a lift moving with an upward acceler...

    Text Solution

    |

  4. With what minimum acceleration can monkey slide down a rope whose brea...

    Text Solution

    |

  5. A ball of mass m moves with speed v and it strikes normally with a wal...

    Text Solution

    |

  6. The velocity of a body at time t = 0 is 10sqrt2m//s in the north-east ...

    Text Solution

    |

  7. A body of mass 5 kg starts from the origin with an initial velocity ve...

    Text Solution

    |

  8. A body of mass 8kg is moved by a force F = (3x)N, where x is the disat...

    Text Solution

    |

  9. The linear momentum p of a body moving in one dimension varies with ti...

    Text Solution

    |

  10. A ball of mass 0.5 kg moving with a velocity of 2 m//s strikes a wall ...

    Text Solution

    |

  11. A paarticle moves in the xy-plane under the action of a force F such t...

    Text Solution

    |

  12. n balls each of mass m impinge elastically each second on a surface wi...

    Text Solution

    |

  13. A ball of mass 400 gm is dropped from a height of 5 m . A boy on the g...

    Text Solution

    |

  14. The time in which a force of 2 N produces a change of momentum of 0.4k...

    Text Solution

    |

  15. A gun of mass 10 kg fires 4 bullets per second. The mass of each bulle...

    Text Solution

    |

  16. A gardener water the plants by a pipe of dimeter 1mm . The water comes...

    Text Solution

    |

  17. A solid disc of mass M is just held in air horizontally by throwing 40...

    Text Solution

    |

  18. A ladder rests against a frictionless vertical wall, with its upper en...

    Text Solution

    |

  19. A satellite in a force - free space sweeps stationary interplanetary d...

    Text Solution

    |

  20. 10,000 small balls, each weighing 1 gm , strike one square cm of area ...

    Text Solution

    |