Home
Class 11
PHYSICS
The mass of a lift is 2000kg . When the ...

The mass of a lift is `2000kg` . When the tension in the supporting cable is `28000N` , then its acceleration is.

A

`30 ms^(-2)` downwards

B

`4 ms^(-2)` upwards

C

`4 ms^(-2)` downwards

D

`14 ms^(-2)` upwards

Text Solution

Verified by Experts

The correct Answer is:
B
m = 2000 kg : T = 28000N
`T = m(g+a) rArr a = (T)/(m) - g`
` a= (28000)/(2000) - 10 = 4 m//s^(2) ` (upward motion)
Promotional Banner

Topper's Solved these Questions

  • NEWTON'S LAWS OF MOTION

    ERRORLESS|Exercise NCERT BASED QUESTION (THIRD LAW OF MOTION)|11 Videos

  • NEWTON'S LAWS OF MOTION

    ERRORLESS|Exercise NCERT BASED QUESTION (CONSERVATION OF LINEAR MOMENTUM AND IMPULSE)|29 Videos

  • NEWTON'S LAWS OF MOTION

    ERRORLESS|Exercise ASSERTION & REASON |18 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

The mass of a lift is 2000kg . When the tensioon in the supporting cable is 28000N , then its acceleration is.

An elevator weighs 4000kg When the upward tension in the supporting cable is 48000 N what is the upward acceleration? Starting from rest, how far does it rise in 3 seconds ?

When a liftman takes 5 persons in a lift, the totla mass of the lilft and the 5 persons becomes 800 kg. What is the tension in the supporting cable, if the lift ascends with an acceleration of 2m//s^(2) ? (g=10m//s^(2)

An elevator weighing 5000 kg is moving upward and tension in the supporting cable is 5000 N . Find upward acceleration . Starting from rest , how far does it rise in 10 secound ?

An elevator and its load weigh a total of 1600 kg. Find the tension T in the supporting cable when the elevator, originally moving downward at 20 m/s is brought to rest with constant acceleration in a distance of 50 m.

An elevator and its load weigh a total of 166 kg. Find the tension T in the supporting cable when the elevator, originally moving downwards at 20m//s is brought to rest with constant acceleration in a distance of 50 m.

An elevator and its load wiegh a total of 1600 lb. Find the tension T in the supporting cable when the elevator, originally moving downwards at 20 ft/s is brought to rest with constant acceleration in a distance of 50 ft.

An elevator and its load weigh a total of 800kg Find the tension T in the supporting cable when the elevator originally moving downwards at 20m//s is brought to rest with constant retardation in a distnce of 50m .

ERRORLESS-NEWTON'S LAWS OF MOTION-NCERT BASED QUESTION ( SECOND LAW OF MOTION)
  1. A rope of mass 0.1 kg is connected at the same height of two opposite ...

    Text Solution

    |

  2. A block of mass m is placed on a smooth wedge of inclination theta. T...

    Text Solution

    |

  3. A balloon with mass m is descending down with an acceleration a (where...

    Text Solution

    |

  4. A solid sphere of mass 2 kg is resting inside a cube as shown in the f...

    Text Solution

    |

  5. The mass of a lift is 2000kg . When the tension in the supporting cabl...

    Text Solution

    |

  6. A 10 kg stone is suspended with a rope of breaking strength 30 kg-wt. ...

    Text Solution

    |

  7. A person of mass 60 kg is inside a lift of mass 940 kg and presses the...

    Text Solution

    |

  8. A lift is going up. The total mass of the lift and the passenger is 15...

    Text Solution

    |

  9. A sphere is accelerated upwards with the help of a cord whose braking ...

    Text Solution

    |

  10. The spring balance inside a lift suspends an object. As the lift begin...

    Text Solution

    |

  11. A mass 1 kg is suspended by a thread. It is (i) lifted up with an ac...

    Text Solution

    |

  12. If in a stationary lift, a man is standing with a bucket full of water...

    Text Solution

    |

  13. A monkey of mass 20kg is holding a vertical rope. The rope will not br...

    Text Solution

    |

  14. A spring balance is attached to the ceiling of a lift. A man hangs his...

    Text Solution

    |

  15. A lift is moving down with acceleration a. A man in the lift drops a b...

    Text Solution

    |

  16. A reference frame attached to the earth

    Text Solution

    |

  17. For ordinary terrestrial experimants, the observer is an inertial fram...

    Text Solution

    |

  18. A body of mass 0.05 kg is observed to fall with an acceleration of 9.5...

    Text Solution

    |

  19. A particle of mass m is at rest the origin at time t= 0 . It is subj...

    Text Solution

    |

  20. A constant force acts on a body of mass 0.9 kg at rest for 10 s . If t...

    Text Solution

    |