Home
Class 12
PHYSICS
A man weighing 80 kg is standing at the ...

A man weighing 80 kg is standing at the centre of a flat boat and he is 20 m from the shore. He walks 8 m on the boat towards the shore and then halts.The boat weight 200 kg. How far is he from the shore at the end of this time ?

A

11.2 m

B

`13.8` m

C

14.3 m

D

15.4 m

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CENTRE OF MASS

    MOTION|Exercise Exercise - 2 (Level-I)|40 Videos
  • CENTRE OF MASS

    MOTION|Exercise Exercise - 2 (Level-II)|28 Videos
  • CENTRE OF MASS

    MOTION|Exercise Exercise - 4 Level-II|20 Videos
  • Capacitance

    MOTION|Exercise EXERCISE -4 LEVEL II|19 Videos
  • CIRCULAR MOTION

    MOTION|Exercise EXERCISE - 4|16 Videos

Similar Questions

Explore conceptually related problems

A man weighting 60 kgis standing at the centre of a flat boat and he is 20 m from the shore. He walks 8 cm on the boat towards the shore and then halts. The boat weights 200 kg How far is the from the shore at the end of this time? [Hints : As the system is free from external force, centre of mass of the system consisting of man and boat must not move.

A dog weighing 5kg is standing on a flat boat so that it is 10 metres from the shore. It walks 4m on the boat towards the shore and then halts. The boat weighs 20kg and one can assume that there is no friction between it and water. The dog from the shore at the end of this time is

A man weighing 70 kg is standing at the centre of a flat boat of mass 350 kg. The man who is at a distance of 10 m from the shore walks 2 m towards it and stops. How far will he be from the shore? Assume the boat to be of uniform thickness and neglect friction between boat and water?

A dog of mass 10 kg is standing on a flat 10 m long boat so that it is 20 m meters from the shore. It walks 8 m on the boat towards the shore and then stops. The mass of the boat is 40 kg and friction between the boat and the water surface is negligible. How far is the dog from the shore now ?

A wooden log of mass 120kg is floating on still water perpendicular to the shore. A man of mass 80kg is standing at the centre of mass of the log and he is at a distance of 30m from the shore. When he walks through a distance of 10m towards the shore and halts, now his distance from the shore is (A) 20m (B) 24m (C) 26m (D) 28m

A 10 kg boy standing in a 40 kg boat floating on water is 20 m away from the shore of the river. If the boy moves 8 m on the boat towards the shore, then how far is he from the shore ? (Assume no friction between boat and water).

A man is standing at the center of frictionless pond of ice. How can he get himself to the shore ?

Ram went 20 m to the North, then turned towards East and walked another 5 m, then he turned towards right and covered 20 m. How far is he from the starting point?

A man goes 15m due west and then 8m due north.How far is he from the starting point?

MOTION-CENTRE OF MASS-Exercise - 1
  1. Two balls A and B of masses 100gm and 250 gm respectively are connecte...

    Text Solution

    |

  2. A particle of mass 3m is projected from the ground at some angle with ...

    Text Solution

    |

  3. A man weighing 80 kg is standing at the centre of a flat boat and he i...

    Text Solution

    |

  4. Two particles having mass ratio n:1 are interconnected by a light inex...

    Text Solution

    |

  5. Internal forces can change

    Text Solution

    |

  6. A small sphere is moving at a constant speed in a vertical circle. Bel...

    Text Solution

    |

  7. Which of the following graphs represents the graphical relation betwee...

    Text Solution

    |

  8. Two balls are thrown simultaneously in air. The acceleration of the ce...

    Text Solution

    |

  9. Principle of conservation of linear momentum is duduced from

    Text Solution

    |

  10. A body of mass ma collides against a wall with the velocity v and rebo...

    Text Solution

    |

  11. A bomb initially at rest explodes by it self into three equal mass fra...

    Text Solution

    |

  12. A srtone of mass m(1) moving at uniform speed v suddenly explodes into...

    Text Solution

    |

  13. A radioactive nucleus of mass number A, initially at rest, emits an al...

    Text Solution

    |

  14. There are some passengers inside a stationary railway compartment. The...

    Text Solution

    |

  15. A system of N particles is free from any external forces. (a) Which ...

    Text Solution

    |

  16. A system of N particles is free from any external forces Which of th...

    Text Solution

    |

  17. An isolated rail car of mass M is moving along a straight, frictionles...

    Text Solution

    |

  18. Surface is perfectly smooth Choose the correct Statement

    Text Solution

    |

  19. Two blocks of masses 2 kg and 1 kg respectively are tied to the ends o...

    Text Solution

    |

  20. A bomb of mass 3m is kept inside a closed box of mass 3m and length 4L...

    Text Solution

    |