Home
Class 12
PHYSICS
A lift can move upward or downward. A li...

A lift can move upward or downward. A light inextensible string fixed from ceiling of lift when a frictionless pulley and tensions in string `T_(1)`. Two masses of `m_(1) and m_(2)` are connected with inextensible light string and tension in this string `T_(2)` as shown in figure. Read the questionbs carefully and answer

If `m_(1)=m_(2) and m_(1)` is moving at a certain instant with velocity `v` upward with respect to lift and the lift is moving in upward direction with constant acceleration `(a lt g)` then speed of `m_(2)` with respect to lift :

A

`T_(1):T_(2):T_(3)::1:1:1`

B

`T_(1):T_(2):T_(3)::6:5:3`

C

`T_(1):T_(2):T_(3)::3:5:5`

D

`T_(1):T_(2):T_(3)::6:5:6`

Text Solution

Verified by Experts

The correct Answer is:
B

`T_(1) mg=mxx2 thereforeT_(1)=mxx12`
`T_(2)=mg T_(2)=mxx10`
`mg-T_(3)=mxx4 T_(3)=mxx16`
`T_(1):T_(2):T_(3)=6:5:3`
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    ALLEN|Exercise EXERCISE-III|28 Videos
  • NEWTONS LAWS OF MOTION

    ALLEN|Exercise EXERCISE-I|52 Videos
  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN|Exercise EXERCISE (JA)|4 Videos
  • RACE

    ALLEN|Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|24 Videos

Similar Questions

Explore conceptually related problems

Two blocks of masses m and M are connected by an inextensible light string . When a constant horizontal force acts on the block of mass M. The tension in the string is

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 :

Two blocks each of mass m are connected over two light and frictionless pulleys and a fixed wedge by a light string as shown in figure. The tension in the string is :

A lift of mass 200 kg is moving upward with an acceleration of 3m//s^(2) . If g=10 m//s^(2) then the tension of string of the lift will be :

A massless string passes over a frictionless pulley and carries mass m_1 hanging at one end and mass m_2 connected by another massless string to mass m_3 at other end as shown in figure. Calculate the tension in string joining masses m_2 and m_3 .

Calculate the tension in the string shown in figure. The pulley and the string are light and all surfaces are frictionless. Take g=10 m/ s^2 .

Two particles of a mass 2m and m are tied with an inextensible string the particle of mass m is given a speed V as shown in the figure. Find the speed with which the particle of mass 2m starts moving.

Two particles of a mass 2m and m are tied with an inextensible string the particle of mass m is given a speed V as shown in the figure. Find the speed with which the particle of mass 2m starts moving.

Two masses m and M(m lt M) are joined by a light string passing over a smooth and light pulley (as shown)

Two masses m_(1) and m_(2) are connected to the end of a string passing over a smooth pulley . The magnitude of tension in the string is T and the masses are moving with magnitude of acceleration a . If the masses are interchanged , then

ALLEN-NEWTONS LAWS OF MOTION-EXERCISE-II
  1. A mass of 6 kg is suspended by a rope of length 2m from a celling. A f...

    Text Solution

    |

  2. The force exerted by the floor of an elevator on the foot of a person ...

    Text Solution

    |

  3. A lift can move upward or downward. A light inextensible string fixed ...

    Text Solution

    |

  4. Two blocks each having a mass M are placed as shown in the figure. The...

    Text Solution

    |

  5. Two blocks of masses 2.9 kg and 1.9 kg are suspended from a rigid supp...

    Text Solution

    |

  6. The pulleys and strings shown in fig are smooth and of negligible mass...

    Text Solution

    |

  7. A metal sphere is a string fixed to a wall. The forces acting on the s...

    Text Solution

    |

  8. An object of mass 10kg moves at a constant speed of 10 ms^(-1). A cons...

    Text Solution

    |

  9. The ratio of the weight of a man in a stationary lift and when it is m...

    Text Solution

    |

  10. A body of mass 40g is moving with a constant velocity 2cm/s on a horiz...

    Text Solution

    |

  11. The velocity acquired by a mass m in travelling a certain distance d s...

    Text Solution

    |

  12. A cork and a metal bob are connected by a string as shown in the figur...

    Text Solution

    |

  13. A body kept on a smooth inclined plane inclination 1 in x will remain ...

    Text Solution

    |

  14. A pulley is attached to the celing of a lift moing upwards. Two partic...

    Text Solution

    |

  15. Two masses of 1 kg and 5 kg are attached to the ends of a massless str...

    Text Solution

    |

  16. A player catches a ball of 200 gm moving with a speed of 20 m/s. if th...

    Text Solution

    |

  17. A frame will be inertial, if it moves with respect to another inertial...

    Text Solution

    |

  18. Two masses 10 kg and 20 kg respectively are connected by a massless sp...

    Text Solution

    |

  19. The pulley arrangements shown in figure are identical, the mass of the...

    Text Solution

    |

  20. What is the mechanical advantage of single fixed pulley:-

    Text Solution

    |