Home
Class 11
PHYSICS
Two persons of masses 55 kg and 65 kg re...

Two persons of masses 55 kg and 65 kg respectively , are at the opposite ends of a boat . The length of the boat is 3.0 m and weight 100 kg . The 55 kg man walks up to the 65 kg man and sits with him . If the boat is in still water the centre of mass of the system shifts by

A

3.0 m

B

2.3 m

C

zero

D

0.75 m

Text Solution

Verified by Experts

The correct Answer is:
C
As no external force acts on the system , therefore centre of mass will not shift .
Promotional Banner

Topper's Solved these Questions

  • MOTION OF SYSTEM OF PARTICLES AND RIGID BODY

    MTG GUIDE|Exercise CHECK YOUR NEET VITALS|14 Videos

  • LAWS OF MOTION

    MTG GUIDE|Exercise AIPMT /NEET (MCQ)|24 Videos

  • OSCILLATIONS AND WAVES

    MTG GUIDE|Exercise AIPMT / NEET MCQs|43 Videos

Similar Questions

Explore conceptually related problems

Two persons A and B of weight 80 kg and 50 kg respectively are standing at opposite ends of a boat of mass 70 kg and length 2 m at rest. When they interchange their positions then displacement of the centre of mass of the boat will be :-

Two boys A and B of masses 60kg and 40kg respectively are at the ends of a 4m long boat of mass 100kg which is on water in lake and the system is at rest.If the boys meet at the centre of the boat then find the displacement of centre of mass of the boat in meter (neglect friction between water and boat)

Two particles of mass 5 kg and 10 kg respectively are attached to the twoends of a rigid rod of length 1 m with negligible mass. the centre of mass of the system from the 5 kg particle is nearly at a distance of :

Two bodies of masses 1 kg and 2 kg, separated by 6 m are rotating about the centre of mass of the system. The moment of inertia of the system is

A boy of mass 50kg is standing at one end of a boat of length 9m and mass 400kg . He runs to the other end. The distance through which the centre of mass of the boat boy system moves is

MTG GUIDE-MOTION OF SYSTEM OF PARTICLES AND RIGID BODY -AIPMT / NEET (MCQs)
  1. A small mass attached to a strong rotates on a frictionless table top ...

    Text Solution

    |

  2. ABC is an equilateral triangle with O as its centre vecF(1) , vecF(2) ...

    Text Solution

    |

  3. Two persons of masses 55 kg and 65 kg respectively , are at the opposi...

    Text Solution

    |

  4. When a mass is rotating in a plane about a fixed point , its angular m...

    Text Solution

    |

  5. A circular platform is mounted on a frictionless vertical axle . Its r...

    Text Solution

    |

  6. The moment of inertia of a uniform circular disc is maximum about an a...

    Text Solution

    |

  7. Three masses are placed on the x-axis : 300 g at origin , 500 g at x =...

    Text Solution

    |

  8. A small object of uniform density rolls up a curved surface with an in...

    Text Solution

    |

  9. A solid cylinder of mass 50 kg and radius 0.5 m is free to rotate abou...

    Text Solution

    |

  10. The ratio of the accelerations for a solid sphere (mass m and radius R...

    Text Solution

    |

  11. A rod of weight W is supported by two parallel knife edges A and B and...

    Text Solution

    |

  12. Three identical spherical shells , each of mass m and radius r are pl...

    Text Solution

    |

  13. Point masses m1 and m2 are placed at the opposite ends of a rigid rod ...

    Text Solution

    |

  14. An automobile moves on a road with a speed of 54 km h^-1 . The radius ...

    Text Solution

    |

  15. A force vecF = alpha hati + 3hatj + 6hatk is acting at a point vecr = ...

    Text Solution

    |

  16. A disk and a sphere of same radius but different masses roll off on tw...

    Text Solution

    |

  17. From a disc of radius R and mass M , a circular hole of diameter R , w...

    Text Solution

    |

  18. A uniform circular disc of radius 50 cm at rest is free to turn about ...

    Text Solution

    |

  19. Two rotating bodies A and B of masses m and 2 m with moments of inerti...

    Text Solution

    |

  20. A solid sphere of mass m and radius R is rotating about its diameter A...

    Text Solution

    |