Home
Class 12
PHYSICS
A block is kept on the floor of an eleva...

A block is kept on the floor of an elevator at rest. The elevator starts descending with an acceleration of 12 m/`s^2`. Find the displacement of the block during the first 0.2 s after the start. Take g=10 m/`s^2`.

A

40 cm

B

30 cm

C

20 cm

D

10 cm

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise MOTION IN A PLANE|87 Videos
  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos
  • ATOMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|21 Videos

Similar Questions

Explore conceptually related problems

A body starts from rest with a uniform acceleration of 2 m s^(-1) . Find the distance covered by the body in 2 s.

A block of mass m is kept on a platform Platform starts moving upwards with an acceleration of g/2 . Find the work done by the normal force on the block in the first one second.

A body moves from rest with a uniform acceleration and travels 270 m in 3 s. Find the velocity of the body at 10 s after the start.

A block of mass 2 kg rests on the floor of an elevator , which is moving down with an acceleration 'g' , then the apparent weight of the block is [ take g = 10 m//s^(2) ]

The elevator shown in figure is descending with an acceleration of 2m/s^2 . The mass of the block A is 0.5 kg. What force is exerted by the block A on the block B?

Suppose the ceiling in the previous problem is that the elevator which is going up with an acceleration of 2.0 m/s^2 . Find the elongations.

A block is placed over a plank. The coefficient of friction between the block and the plank is mu= 0.2. Initially both are at rest, suddenly the plank starts moving with acceleration a_(0) = 4m//s^(2). The displacement of the block in 1 is (g=10m//s^(2))

The elevator shown in fig. is descending with an acceleration of 2ms^(-2) . The mass of the block A=0.5kg . Find the force (in Newton) exerted by block A on block B.

The elevator shown in fig. is descending with an acceleration of 2ms^(-2) . The mass of the block A=0.5kg . Find the force (in Newton) exerted by block A on block B.

A man of mass 40kg is standing on a weighting machine kept on the floor of an elevator which is moving up with an acceleration of 2m//s^2 Find the reading of the weighing maching.

AAKASH SERIES-APPENDICES (REVISION EXERCISE)-LAW OF MOTION
  1. If 'O' is at equilibrium then the values of the tension T(1) and T2 re...

    Text Solution

    |

  2. If four forces act at a point 'O' as shown in the figure and if O is i...

    Text Solution

    |

  3. A block is kept on the floor of an elevator at rest. The elevator star...

    Text Solution

    |

  4. The displacement of a body is given by s=(1)/(2)g t^(2) where g is acc...

    Text Solution

    |

  5. The maximum tension a rope can withstand is 60 kg.wt. The ratio of max...

    Text Solution

    |

  6. A uniform rope of mass m hangs freely from a ceiling. A bird of mass M...

    Text Solution

    |

  7. Two bodies of masses 4 kg and 6 kg connected by means of a light strin...

    Text Solution

    |

  8. An empty plastic box of mass 5 kg is observed to accelerate up at the ...

    Text Solution

    |

  9. Two blocks of masses '3m' and '2m' are in contact on a smooth table. A...

    Text Solution

    |

  10. In the arrangment shown in the figure, the ratio of tensions T(1): T(2...

    Text Solution

    |

  11. A monkey a mass 15 kg is climbing on a rope with one end fixed to the ...

    Text Solution

    |

  12. A massless string passes around a frictionless pulley whose axis is ho...

    Text Solution

    |

  13. A homogeneous rod of length L is acted upon by two forces F(1) and F(2...

    Text Solution

    |

  14. A railway engine of mass 50 tons is pulling a wagon of mass 40 tons wi...

    Text Solution

    |

  15. A chain consisting of 5 links each of mass 0.1 kg is lifted vertically...

    Text Solution

    |

  16. A light rope fixed at one end of a wooden clamp on the ground passes o...

    Text Solution

    |

  17. Two masses 5 kg and 3 kg are suspended from the ends of an unstretchab...

    Text Solution

    |

  18. In the figure, blocks A, B and C of mass m each have acceleration a1, ...

    Text Solution

    |

  19. The tension in the string connected between blocks is

    Text Solution

    |

  20. The reading in the spring balance is

    Text Solution

    |