Home
Class 11
PHYSICS
A uniform chain of length L and mass M i...

A uniform chain of length L and mass M is lying on a smooth table and one third of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the work required to pull the hanging part on the table is

A

M g L

B

Mg L /3

C

M g L/9

D

M g L/18

Text Solution

Verified by Experts

The correct Answer is:
d
`W = mgh = (M//3) xx g xx (L//6) = mgL//18`
Promotional Banner

Topper's Solved these Questions

  • COMPETITION CARE UNIT

    ICSE|Exercise FRICTION|22 Videos

  • COMPETITION CARE UNIT

    ICSE|Exercise MOTION IN FLUIDS |25 Videos

  • COMPETITION CARE UNIT

    ICSE|Exercise Dynamics ( Laws of motion )|36 Videos

  • CIRCULAR MOTION

    ICSE|Exercise MODULE 2 (FROM ROTATIONAL KINETIC ENERGY , WORK ,POWER)|24 Videos

  • DIMENSIONS

    ICSE|Exercise SELECTED PROBLEMS (FROM CONVERSIONS OF ONE SYSTEMS OF UNITS INTO ANOTHER)|9 Videos

Similar Questions

Explore conceptually related problems

A uniform chain of length L and mass M is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is the acceleration due to gravity, the work required to pull the hanging part on to the table is

A uniform chain of length l and mass m is placed on a smooth table with one-fourth of its length hanging over the edge. The work that has to be done to pull the whole chain back onto the table is :

A chain is held on a frictionless table with 1//n th of its length hanging over the edge. If the chain has a length L and a mass M, how much work is required to pull the hanging part back on the table?

A uniform chain of mass m and length l is lying on a horizontal table with one-third of its length hanging over the edge of the table. If the chain is limiting equlibrium, what is the coefficient of friction for the contact between table and chain?

A uniform chain of mass m and length l is lying on a horizontal table with one-third of its length hanging over the edge of the table. What is the speed of the chain, when it just loses contact with the table?

A uniform chain of mass m and length l is lying on a horizontal table with one-third of its length hanging over the edge of the table. If a gentle push is given to hanging end, it will start moving down. What is the change in gravitational potential energy of the chain, as it just leaves the table?

A chain of length L and mass M is held on a frictionless table with (1//n)th of its length hanging over the edge. When the chain is released, find the velocity of chain while leaving the table.

A chain is held on a frictionless talbe with L//4 hanging over. Knowing total mass of the chain is M and total length is L , the work required to slowly pull hanging part back to the table is :

A uniform chain of mass M and length L is lying on a frictionless table in such a way that its 1//3 parts is hanging vertically down. The work done in pulling the chain up the table is

A uniform chain of length l and mass m overhangs a smooth table with its two third part lying on the table. Find the kinetic energy of the chain as it completely slips off the table.

ICSE-COMPETITION CARE UNIT-Dynamics ( WORK POWER ENERGY )
  1. A long spring is stretched by 2 cm, its potential energy is U. IF the ...

    Text Solution

    |

  2. A motor car needs an engine of 7500 watt to keep it moving with a cons...

    Text Solution

    |

  3. Two masses 1g and 9g are moving with equal kinetic energies. The ratio...

    Text Solution

    |

  4. If momentum of a certain body is increased by 50% then increase in the...

    Text Solution

    |

  5. A bag P (mass M) hangs by a long thread and bullet (mass m) comes hori...

    Text Solution

    |

  6. A particle is projected making angle 45^@ with horizontal having kinet...

    Text Solution

    |

  7. The potential energy between two atoms in a molecule is given by U(x)=...

    Text Solution

    |

  8. Two identical balls A and B moving with velocities + 0.5 m/s and -0.3...

    Text Solution

    |

  9. Water is falling on the blades of turbine at a rate of 100 kg/s from a...

    Text Solution

    |

  10. Work done in time t on a body of mass m which is accelerated from rest...

    Text Solution

    |

  11. The force acting on a body is inversely proportional to the distance (...

    Text Solution

    |

  12. A ball is dropped from a height h on the ground If the coefficient of ...

    Text Solution

    |

  13. A body of mass m accelerates uniformly from rest to v1 in time t1. As ...

    Text Solution

    |

  14. A ball his the floor and rebounds after inelastic collision. In this ...

    Text Solution

    |

  15. A wind - powered generator converts wind energy into electrical energ...

    Text Solution

    |

  16. A body is moved along a straight line by a machine delivering constant...

    Text Solution

    |

  17. A shell is fired from a cannon with a velocity V at an angle theta wit...

    Text Solution

    |

  18. A ship of mass 3 xx 10^(7) kg initially at rest is pulled by a force o...

    Text Solution

    |

  19. A uniform chain of length L and mass M is lying on a smooth table and ...

    Text Solution

    |

  20. Two masses 1g and 9g are moving with equal kinetic energies. The ratio...

    Text Solution

    |