Home
Class 11
PHYSICS
If two particles of masses 3kg and 6kg w...

If two particles of masses `3kg` and `6kg` which are at rest are separated by a distance of `15 m`. The two particles are moving towards each other under a mutual force of attraction. Then the ratio of distances travelled by the particles before collision is

A

`2:1`

B

`1:2`

C

`1:3`

D

`3:1`

Text Solution

Verified by Experts

The correct Answer is:
A
`m_(1)r_(1) = m_(2)r_(2)`
` rArr (r_(1))/(r_(2)) = (m_(2))/(m_(1)) = 6/3 = 2:1 `
Promotional Banner

Topper's Solved these Questions

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    NARAYNA|Exercise EXERCISE - I(H.W)|63 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    NARAYNA|Exercise EXERCISE - II (C.W)|60 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    NARAYNA|Exercise C.U.Q|71 Videos

  • SYSTEM OF PARTICLES

    NARAYNA|Exercise Level-VI|78 Videos

  • THERMAL PROPERTIES OF MATTER

    NARAYNA|Exercise LEVEL - II (H.W.)|19 Videos

Similar Questions

Explore conceptually related problems

Two particles of masses 4kg and 6kg are separated by a distance of 20cm and are moving towards each other under mutual force of attraction, the position of the point where they meet is

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 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.

Two particles A and B initially at rest, move towards each other, under mutual force of attraction. At an instance when the speed of A is v and speed of B is 2v , the speed of centre of mass ( CM ) is

A particle of mass 4 kg is acted upon by steady force of 4 N.Distance travelled by the particle in 4 sec is

Two massive particles of masses M & m (M gt m) are separated by a distance l . They rotate with equal angular velocity under their gravitational attraction. The linear speed of the particle of mass m is

Two bodies with masses M_(1) and M_(2) are initially at rest and a distance R apart. Then they move directly towards one another under the influence of their mutual gravitational attraction. What is the ratio of the distances travelled by M_(1) to the distance travelled by M_(2) ?

NARAYNA-SYSTEM OF PARTICLES AND ROTATIONAL MOTION -EXERCISE - I (C.W)
  1. A dog weighing 5kg is standing on a flat boat so that it is 10 metres ...

    Text Solution

    |

  2. Two bodies of different masses 2kg and 4kg are moving with velocities ...

    Text Solution

    |

  3. If two particles of masses 3kg and 6kg which are at rest are separated...

    Text Solution

    |

  4. Two bodies of 6kg and 4kg masses have their velocity 5hati - 2 hat j +...

    Text Solution

    |

  5. The angular velocity of a rotating body is vec omega = 4 hat i + hat j...

    Text Solution

    |

  6. The angle between the vectors (hat i + hat j + hat k) and ( hat i - ha...

    Text Solution

    |

  7. The average angular velocity of the seconds hand of a watch if the sec...

    Text Solution

    |

  8. The angular displacement of a particle is given by theta =t^3 + t^2 + ...

    Text Solution

    |

  9. A body rotating with uniform angular acceleration covers 100 pi (radia...

    Text Solution

    |

  10. A body rotates about a fixed axis with an angular acceleration of 3 ra...

    Text Solution

    |

  11. A wheel starts from rest and acquires an angular velocity of 60 rad//...

    Text Solution

    |

  12. Two moving particles P and Q are 10 apart at any point . Velocity o...

    Text Solution

    |

  13. Two particle move in concentio cireles of radii r(1) and r(2) such tha...

    Text Solution

    |

  14. A stationary wheel starts rotating about its own axis at uniform rate ...

    Text Solution

    |

  15. A table fan , rotating at a speed of 2400 rpm is switched off and th...

    Text Solution

    |

  16. If vec(F) = 2hat(i) - 3hat(j) N and vec(r ) = 3hat(i) + 2hat(j) m t...

    Text Solution

    |

  17. A door 1.6 m wide requires a force of 1 N to be applied at the free an...

    Text Solution

    |

  18. A weightless rod is acted on by upward parallel forces of 2 N and 4N e...

    Text Solution

    |

  19. The mass of a uniform circular ring of radius 0.2m is 0.1kg. Calcuate ...

    Text Solution

    |

  20. Two bodies of mass 1 kg and 2 kg are attached to the ends of a 2 me...

    Text Solution

    |