Home
Class 12
PHYSICS
Statement A : If the lift is falling fre...

Statement A : If the lift is falling freely then the man on its floor experiences no reaction from the floor.
Statement B : If the lift moves down with an acceleration `a gt g`, then the normal reaction becomes negative and the man feels floating up in the lift.

A

A and B are correct

B

A and B are false

C

A is true and B is false

D

A is false and B is true

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    AAKASH SERIES|Exercise EXERCISE - II|136 Videos

  • LAWS OF MOTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE|106 Videos

  • LAWS OF MOTION

    AAKASH SERIES|Exercise Application|6 Videos

  • GEOMETRICAL OPTICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|10 Videos

  • LOGIC GATES

    AAKASH SERIES|Exercise Exercise (Very Short Answer)|10 Videos

Similar Questions

Explore conceptually related problems

A man measures time period of a pendulum (T) in stationary lift. If the lift moves upward with acceleration (g)/(4) , then new time period will be

A man weighing 60 kg is in a lift moving down with an acceleration of 1.8" ms"^(-2) . The force exerted by the floor on him is

A man in a lift feels an apparent weight W when the lift is moving up with a uniform acceleration of 1/3rd of the acceleration due to gravity. If the same man were in the same lift now moving down with a uniform acceleration that is 1/2 of the acceleration due to gravity, then his apparent weight is

Statement A : When a person is on the floor of a lift which is at rest, the resultant force on him is equal to his weight Statement B : When the lift is moving with uniform velocity, then the apparent weight of the man is zero

Assertion : In the case of free fall of the lift, the man will feel weightlessness. Reason : In free fall, acceleration of lift is equal to acceleration due to gravity.

A lift is moving up with an acceleration of 3.675 m//sec_(2) . The weight of a man-

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.

When an empty lift is moving down with an acceleration of g/4 ms^(-2) the tension in the cable is 9000N. When the lift is moving up with an acceleration of g/3 ms^(-2) the tension in the cable is

A man (mass =50 kg) is in an elevtor with is moving with acceleration 0.49 m//s^(2) upwards. Find normal reaction exerted by man on floor of the elevator.

A person of 60 Kg mass is in a lift which is coming down such that the man exerts a force of 150 N on the floor of the lift. Then the acceleration of the lift is (g=10 ms^(-2) )

AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
  1. A man of mass m is on the floor of a lift. The lift moving up with acc...

    Text Solution

    |

  2. A person of mass m is on the floor of a lift. The lift is moving down ...

    Text Solution

    |

  3. Statement A : If the lift is falling freely then the man on its floor ...

    Text Solution

    |

  4. Statement A : If the force varies with time in a complicated way then ...

    Text Solution

    |

  5. Statement A : Shock absorbers reduce the magnitude of change in moment...

    Text Solution

    |

  6. Two blocks A and B of the same mass and surface finish are sliding on ...

    Text Solution

    |

  7. A good lubricant should be highly

    Text Solution

    |

  8. Theoretically which of the following are best lubricants

    Text Solution

    |

  9. A block of mass'm' is resting on the floor of a lift. The coefficient ...

    Text Solution

    |

  10. When a moving body is suddenly stopped a long time after coming to res...

    Text Solution

    |

  11. A block 'B' rests on 'A'. A rests on a horizontal surface 'C which is ...

    Text Solution

    |

  12. Sand is dusted on the railway tracks during rainy season to

    Text Solution

    |

  13. Which of the following are correct for rolling friction

    Text Solution

    |

  14. If an external force and the frictional force acting on a body cancel ...

    Text Solution

    |

  15. Which of the following statements is not true ?

    Text Solution

    |

  16. When normal reaction is halved the coefficient of friction is

    Text Solution

    |

  17. Match the items mentioned in the lists I and II below LIST -1 a) S...

    Text Solution

    |

  18. With increase of temperature, the frictional force acting between two ...

    Text Solution

    |

  19. If we imagine two ideally smooth surfaces & if they are kept in contac...

    Text Solution

    |

  20. The angle made by the resultant of normal reaction and limiting value ...

    Text Solution

    |