Home
Class 11
PHYSICS
Two particles A and B intiallly at rest,...

Two particles A and B intiallly at rest, move towards each other under a mutual force of attraction. AT the instant when the speed of A is v and the speed of B is 2 v, the speed of the centre of mass of the system is

A

velocity remains constant

B

zero

C

2v

D

3v/2

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CAPACITOR

    RESONANCE ENGLISH|Exercise Exercise|45 Videos
  • CIRCULAR MOTION

    RESONANCE ENGLISH|Exercise Exercise|36 Videos

Similar Questions

Explore conceptually related problems

Two particles A and B, initially at rest, moves towards each other under a mutual force of attraction. At the instant when the speed of A is v and the speed of B is 2 v, the speed of centre of mass is

Two particles A and B initially at rest, move towards each other by mutual force of attraction. At the instant when the speed of A is n and the speed of B is 3n , the speed of the centre of mass of the system is

Two partticles A and B intially at rest move towards each other under a mutual force of attraction. The instant at which velocity of A is 4v and velocity of B is 2v , the velocity of centre of mass of the system at that instant will be

Two particles A and B with particle A having mass m, are moving towards each other under their mutual force of attraction. If their speeds at certain instant are v and 2v respectively, then find the K.E. of the system.

10 Two particles of masses m_(1) and m_(2) initially at rest start moving towards each other under their mutual force of attraction. The speed of the centre of mass at any time t, when they are at a distance r apart, is

Two particles of mass m_(1) and m_(2) are approaching towards each other under their mutual gravitational field. If the speed of the particle is v, the speed of the center of mass of the system is equal to :

Two particles of masses 2 kg and 3 kg are at rest separated by 10 m. If they move towards each other under mutual force of attraction, the position of the point where they meet is

Two particles of masses 4 kg and 6 kg are at rest separated by 20 m. If they move towards each other under mutual force of attraction, the position of the point where they meet is

(A) : Two particles (starting from rest) move towards each other under a mutual force of attraction. The velocity of their c.m is zero. (R ) : Internal forces do not alter the state of motion of c.m.

Two particles of equal mass are moving along the same line with the same speed in the same direction. What is the speed of the centre of mass of the system ?

RESONANCE ENGLISH-CENTRE OF MASS-Exercise
  1. When an explosive shell travelling in a parabolic path under the effec...

    Text Solution

    |

  2. If a ball is thrown upwards from the surface of earth :

    Text Solution

    |

  3. Two particles A and B intiallly at rest, move towards each other under...

    Text Solution

    |

  4. A particle of mass 4m which is at rest explodes into three fragments. ...

    Text Solution

    |

  5. A ball of mass 50 g is dropped from a height h = 10 m . It rebounds lo...

    Text Solution

    |

  6. A bullet of mass m=50 gm strikes (Deltat~~0)a sand bag of mass M =5 kg...

    Text Solution

    |

  7. A ball collides with an inclined plane of inclination theta after fall...

    Text Solution

    |

  8. A ball of mass m strikes the fixed inclined plane after falling throug...

    Text Solution

    |

  9. A rocket with a lift-off mass 3.5xx10^4 kg is blasted upwards with an ...

    Text Solution

    |

  10. A body A of mass M while falling vertically downwards under gravity br...

    Text Solution

    |

  11. The block of mass M moving on the frictionless horizontal surface col...

    Text Solution

    |

  12. Consider a two particle system with the particles having masses m1 and...

    Text Solution

    |

  13. A body of mass m = 3.513 kg is moving along the x-axis with a speed of...

    Text Solution

    |

  14. A block of mass 0.50 kg is moving with a speed of 2.00 m/s on a smooth...

    Text Solution

    |

  15. A shell of mass 100 kg is fired horizontally from a cannon with a mass...

    Text Solution

    |

  16. Two masses of 1 g and 4 g are moving with equal kinetic energies. The ...

    Text Solution

    |

  17. The spacecraft of mass M moves with velocity v in free space at first,...

    Text Solution

    |

  18. When two blocks connected by a spring move towards each other under mu...

    Text Solution

    |

  19. A ball impinges directly on another ball at rest. The first ball is br...

    Text Solution

    |

  20. A continuous stream of particles, of mass m and velocity r, is emitted...

    Text Solution

    |