Home
Class 11
PHYSICS
Assertion : When the lift moves with u...

Assertion : When the lift moves with uniform velocity the man in the lift will feel weightlessness.
Reason : In downward accelerated motion of lift, apparent weight of a body decreases.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
D

For uniform motion apparent weight = Actual weight for downward accelerated motion,
Apparent weight ` lt ` Actual weight .
Promotional Banner

Topper's Solved these Questions

  • NEWTON'S LAWS OF MOTION

    ERRORLESS|Exercise PAST YEARS QUESTIONS |14 Videos
  • MOTION IN TWO DIMENSION

    ERRORLESS|Exercise ASSERTION & REASON|19 Videos
  • ROTATIONAL MOTION

    ERRORLESS|Exercise Assertion & Reason|25 Videos

Similar Questions

Explore conceptually related problems

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.

The weight of a man standing on a weighing machine in a lift is noted when (i) the lift is moving with a uniform velocity and (ii) the lift is moving down with an acceleration a. The ratio of the two weights is 4/3 . What is the value of a

The apparent weight of man in a lift is less the real weight when :

A man of weight W is standing on a lift which is moving upward with an acceleration a. The apparent weight of the man is

A simple pendulum is hung in a stationary lift and its periodic time is T. What will be the effect on its periodic time T if (i) the lift is moving up with a uniform velocity v, (ii) the lift is moving up with a uniform acceleration a, and (iii) the lift is moving down with a uniform acceleration a?

Choose the correct statements- (1) For equilibrium of a body under the action of concurrent forces oversetrightarrow"F"_(1)+oversetrightarrow"F"_(2)+oversetrightarrow"F"_(3)+.......oversetrightarrow"F"_("n")=0 (2) If the downward acceleration of the lift is a = g, then the body will experience weightlessness. (3) If the downward acceleration of the body is a gt g, then the body will rise up to the ceiling of lift (4) If the downward acceleration of the lift is a gt g, then the body will experience weightlessness.

A lift is going up with uniform velocity When brakes are applied it slows down. A person in that lift experiences

A person of mass m is standing in a lift. Find his apparent weight when the lift is : moving downward with uniform acceleration a(lt g)

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

ERRORLESS-NEWTON'S LAWS OF MOTION-ASSERTION & REASON
  1. Assertion : Inertia is the property by virtue of which the body is u...

    Text Solution

    |

  2. Statement-1 : If the net external force on the body is zero then its a...

    Text Solution

    |

  3. Assertion: A man in a dosed cabin falling freely does not experience g...

    Text Solution

    |

  4. Assertion : Force is required to move a body uniformly along a circl...

    Text Solution

    |

  5. Assertion : A body subjected to three concurrent forces cannot be in...

    Text Solution

    |

  6. Statement -1 : Aeroplanes always fly at low altitudes. Statement -2...

    Text Solution

    |

  7. Assertion : Linear momentum of a body changes even when it is moving...

    Text Solution

    |

  8. Assertion:Mass is a measure of inertia of the body in linear motion. ...

    Text Solution

    |

  9. Assertion : Slope of momentum - time graph gives acceleration Reason...

    Text Solution

    |

  10. Statement - I : A cyclist always bends in wards while negotiating a cu...

    Text Solution

    |

  11. Assertion : The work done in bringing a body down from the top to the ...

    Text Solution

    |

  12. Assertion : Linear momentum of a body changes even when it is moving...

    Text Solution

    |

  13. Assertion : A bullet is fired from a rifle. If the rifle recoils fre...

    Text Solution

    |

  14. Assertion : A reference frame attached to earth is an inertial frame o...

    Text Solution

    |

  15. Assertion : The apparent weight of a body in an elevator moving with...

    Text Solution

    |

  16. Assertion : When the lift moves with uniform velocity the man in the...

    Text Solution

    |

  17. Assertion : Newton’s third law of motion is applicable only when bod...

    Text Solution

    |

  18. Assertion: A player lowers his hands while catching a cricket ball and...

    Text Solution

    |