Home
Class 11
PHYSICS
An elevator car, whose floor to ceiling ...

An elevator car, whose floor to ceiling distance is equal to `2.7m` starts ascending with constant acceleration of `1.2m//s^(2)`, 2 s after the start, a bolt begins falling from the ceiling of the car. The free fall time of the bolt is `(g=9.8m//s^(2))`

A

`sqrt(0.54)s`

B

`sqrt(6)s`

C

`0.7s`

D

`1s`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOTION IN ONE DIMENSION

    ERRORLESS |Exercise Relative Motion|13 Videos

  • MOTION IN ONE DIMENSION

    ERRORLESS |Exercise Motion Under Gravity|81 Videos

  • MOTION IN ONE DIMENSION

    ERRORLESS |Exercise Uniform Motion|24 Videos

  • GRAVITATION

    ERRORLESS |Exercise SET|27 Videos

  • MOTION IN TWO DIMENSION

    ERRORLESS |Exercise Exercise|319 Videos

Similar Questions

Explore conceptually related problems

An elevator car whose floor to ceiling distance is equal to 2.7 m starts ascending with constant acceleration 1.2 m//s^(2) , 2 sec after the start a bolt begins falling from the ceiling of the car. Answer the following question (g=9.8 m//s^(2) The bolt's free falls time

An elevator car whose floor to ceiling distance is equal to 2.7 m starts ascending with constant acceleration 1.2 m//s^(2) , 2 sec after the start a bolt begins falling from the ceiling of the car. Answer the following question (g=9.8 m//s^(2) The velocity of bolt at instant it loses contact is

An elevator car whose floor to ceiling distance is equal to 2.7 m starts ascendiung with constant acceleration 1.2(m)/(s^(2)) , 2 sec after the start a bolt begins falling from the ceiling of the car. Answer the following question g = 9.8 m//s^(2) Distance moved by elevator car w.r.t. ground frame during the free fall time of the bolt.

An elevator car whose floor to ceiling distance is equal to 2.7 m starts ascendiung with constant acceleration 1.2(m)/(s^(2)) , 2 sec after the start a bolt begins falling from the ceiling of the car. Answer the following question g=9.8 m//s^(2) Distance covered by the bolt during the free fall time w.r.t. ground frame.

. An elevator, whose floor to the ceiling dis tance is 2.50m, starts ascending with a con stant acceleration of 1.25 ms - 2. One second after the start, a bolt begins falling from the ceiling of elevator. The free fall time of the bolt is [g g=10ms^(-2) ]

An elevator car whose floor to ceiling distance is equal to 2.7m starts ascending with constant acceleration 1.2 m//s^2. 2 s after the start, a bolt begins falling from the ceiling of the car. Find (a)the time after which bolt hits the floor of the elevator. (b)the net displacement and distance travelled by the bolt, with respect to earth. (Take g=9.8 m//s^2)

A lift starts ascending with an acceleration of 4 ft//s^(2) . At the same time a bolt falls from its cieling 6ft above the floor. Find the time taken by it to reach the floor. g= 32 ft//s^(2)

A lift, initially at rest on the ground, starts ascending with constant acceleration 8m//s^(2) After 0.5 seconds, a bolt falls off the floor of the lift. The velocity of the lift at the instant the bolt hits the ground is m/s .[Take g=10 m//s^(2) ]

An elevator with floor to roof height 24m starts moving upwards with a constant acceleration of 2(m)/(s^(2)). At t=2s ,a bolt on the roof loosens and falls. Time the bolt takes to travel from the roof to the floor of the elevator is g=10ms^(-2)]

ERRORLESS -MOTION IN ONE DIMENSION-Non-uniform Motion
  1. The displacement of a particle is given by y = a + bt + ct^2 - dt^4. T...

    Text Solution

    |

  2. A car moving with a speed of 40 km//h can be stopped by applying the b...

    Text Solution

    |

  3. An elevator car, whose floor to ceiling distance is equal to 2.7m star...

    Text Solution

    |

  4. The displacement is given by x = 2t^(2) +t +5, the acceleration at t =...

    Text Solution

    |

  5. Two trains travelling on the same track are approaching each other wit...

    Text Solution

    |

  6. A body moves from rest with a constant acceleration of 5m//s^(2). Its ...

    Text Solution

    |

  7. A boggy of uniformly moving train is suddenly detached from train and ...

    Text Solution

    |

  8. A body starts from rest, what is the ratio of the distance travelled b...

    Text Solution

    |

  9. The acceleration a in ms^-2 of a particle is given by a=3t^2+2t+2, whe...

    Text Solution

    |

  10. A particle moves along a staight line such that its displacement at an...

    Text Solution

    |

  11. For a moving body at any instant of time

    Text Solution

    |

  12. The x and y coordinates of a particle at any time t are given by x=7t+...

    Text Solution

    |

  13. The engine of a car produces acceleration 4m//s^(2) in the car. If thi...

    Text Solution

    |

  14. If a body starts from rest and travels 120 cm in the 6 second then wha...

    Text Solution

    |

  15. If a car at rest, accelerates uniformly to a speed of 144 km//h in 20s...

    Text Solution

    |

  16. The position x of a particle varies with time t as x=at^(2)-bt^(3). Th...

    Text Solution

    |

  17. A truck and a car are moving with equal velocity. On applying the brak...

    Text Solution

    |

  18. (a) If a train traveling at 72 km//h is to be brought to rest in a dis...

    Text Solution

    |

  19. The displacement of a particle starting from rest (at t = 0) is given ...

    Text Solution

    |

  20. What is the relation between displacement, time and acceleration in ca...

    Text Solution

    |