Home
Class 11
PHYSICS
n identical cubes each of amss m an side...

n identical cubes each of amss m an side I are on the horizontal surface. Then the minimum amount of work done to arrange then one on the ther is

A

nmgl

B

`(mgl n^(2))/(2)`

C

`(mgl n(n-1))/(2)`

D

`(mgl n(n+1))/(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • WORK POWER ENERGY

    AAKASH SERIES|Exercise EXERCISE - 3|61 Videos

  • WORK POWER ENERGY

    AAKASH SERIES|Exercise EXERCISE - 1B|39 Videos

  • WORK -POWER-ENERGY

    AAKASH SERIES|Exercise PRACTICE SHEET (ADVANCED) (STRAIGHT OBJECTIVE TYPE QUESTIONS)|36 Videos

  • WORK, POWER & ENERGY

    AAKASH SERIES|Exercise PRACTICE EXERCISE (PERFECTLY INELASTIC COLLISIONS)|5 Videos

Similar Questions

Explore conceptually related problems

Twenty identical cubical blocks each of mass 100 gm and of side 10cm are lying on a horizontal surface. Work done in piling them one above the other is, ( g = 10ms^(-2) )

Consider ..n.. number of indentical cubes each of mass ..m.. and side ..a.. lying on a level ground. Find the work done in piling them one above the other.

AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 2
  1. A force vec(F)=(5hat(i)-3hat(j)+2hat(k)) N moves a particle from bar(r...

    Text Solution

    |

  2. A uniform chain of length 2 m is kept on a table such that a length of...

    Text Solution

    |

  3. n identical cubes each of amss m an side I are on the horizontal surfa...

    Text Solution

    |

  4. A person of mass 50 kg carrying a load of 20 kg walks up a staircase. ...

    Text Solution

    |

  5. A rectangular block of dimensions 6m xx 4m xx 2m and of density 1.5 gm...

    Text Solution

    |

  6. A body of mass 5 kg moving alonga straight line is accelerated from 4m...

    Text Solution

    |

  7. A uniform rod of length 2m and mass 5kg is lying on a horizontal surfa...

    Text Solution

    |

  8. A ladder .AB. of weight 300 N and length 5 m is lying on a horizontal ...

    Text Solution

    |

  9. Force acting on a particle is (2hati+3hatj)N. Work done by the force i...

    Text Solution

    |

  10. A force of (4x^(2)+3x)N acts on a particle which displaces it from x=2...

    Text Solution

    |

  11. Velocity -time graph of a particle of mass 2 kg moving in a straight l...

    Text Solution

    |

  12. A force of 5N is applied on a 20 Kg mass at rest. The work doen in the...

    Text Solution

    |

  13. A body moves a distance of 20 m along a striaght line under the action...

    Text Solution

    |

  14. The work done in lifting a body of mass 20 kg and specific gravity 3.2...

    Text Solution

    |

  15. The work done in carrying a body from A to B is 20 J and from B to C i...

    Text Solution

    |

  16. A particle of mass 0.1 kg is subjected to a force which varies with d...

    Text Solution

    |

  17. A uniform metre scale of mass 2kg is suspended from on end. If it is d...

    Text Solution

    |

  18. Two sopheres whose radii are in the ratio 1:2 are moving with theier v...

    Text Solution

    |

  19. A river of salty water is flowling with a velocity 2 m/sec. If the den...

    Text Solution

    |

  20. When a spring is compresssed by 3 cm the potential energy stored in it...

    Text Solution

    |