Home
Class 12
PHYSICS
Statement-1: In centre of mass frame the...

Statement-1: In centre of mass frame the linear momentum of system is conserved only if no external forces are present
Statement-2: In presence of external force, the centre of mass has acceleration in inertial frame equal to `(Sigmavec(F)_(ext))/(m_(total))`

A

Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.

B

Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.

C

Statement-1 is true, statement-2 is false.

D

Statement -1 is false, statement -2 is true.

Text Solution

Verified by Experts

The correct Answer is:
D
In centre of mass frame linear momentum always remains zero.
Promotional Banner

Topper's Solved these Questions

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Multiple objective|131 Videos

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Subjective|107 Videos

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Comphrehension|134 Videos

  • FLUID MECHANICS

    BANSAL|Exercise PYQS AIEEE|10 Videos

  • SEMICONDUCTORS

    BANSAL|Exercise CBSE Question|32 Videos

Similar Questions

Explore conceptually related problems

The velocity of centre of mass of the system remains constant, if the total external force acting on the system is.

Statement-1 : Total linear momentum of system in centre of mass frame is zero only when there is no net external force. Statement-2 : Total linear momentum of system is conserved in absence of net external force.

Statement-1 : Internal forces can change total linear momentum of system. Statement-2 : Due to work of internal forces kinectic energy of system may change.

A system of particles is free from any external force vec v and vec a be the velocity and acceleration of the centre of mass, then it necessarily follows that :

Linear Momentum Of Two System Of Particle Relative To Centre Of Mass Frame

The rate of change of angular momentum of a system of particles about the centre of mass is equal to the sum of external torque about the centre of mass when the centre of mass is :

Statement-1 : The centre of mass of a proton and an electron, released from their respective positions remains at rest. tatement-2 : The centre of mass remains at rest, if no external force is applied

Statement-1: If the resultant of all the forces acting on a system is zero then the torque on the system about any point is same. Statement-2: If the resultant of the forces acting on a system is zero then acceleration of its centre of mass is zero.

Statement-1 : The centre of mass of a system of n particles is the weighted average of the position vector of the n particles making up the system . Statement-2 : The position of the centre of mass of a system is independent of coordinate system

BANSAL-MASTER PRACTICE PROBLEM-Reasoning
  1. Statement-1 and 2 are on a situation of a frog jumping vertically up o...

    Text Solution

    |

  2. Statement-1: If the centre of mass of a system is at the origin then t...

    Text Solution

    |

  3. Statement-1: In centre of mass frame the linear momentum of system is ...

    Text Solution

    |

  4. Statement-1: If we want to throw a bottle from a moving train so that ...

    Text Solution

    |

  5. Two blocks are connected by a spring and given velocity v(1) and v(2) ...

    Text Solution

    |

  6. Statement-1: Total kinetic energy during an elastic collision between ...

    Text Solution

    |

  7. Statement-1: If the resultant of all the forces acting on a system is ...

    Text Solution

    |

  8. Consider the arrangement shown in figure. The block is initially at re...

    Text Solution

    |

  9. A thin walled hollow spherical shell of mass m and radius r starts fro...

    Text Solution

    |

  10. Figure shows a yo-yo placed on a rough surface friction is sufficient ...

    Text Solution

    |

  11. Statement-1: Friction is necessary for a body to roll purely on a leve...

    Text Solution

    |

  12. Statement-1: When a sphere is rolling without sliding it is possible t...

    Text Solution

    |

  13. Figure shows a rigid body that is mirror symmetric about a plane and r...

    Text Solution

    |

  14. Consider a semicircular ring with mass m and radius R as shown in figu...

    Text Solution

    |

  15. Statement-1: For the calculation of gravitational force between any tw...

    Text Solution

    |

  16. Statement-1: Assuming zero potential at infinity, the gravitational po...

    Text Solution

    |

  17. Statement-1: Period of revolution of satellite in circular orbit aroun...

    Text Solution

    |

  18. Statement-1: It takes more fuel for a spacecraft to travel from the ea...

    Text Solution

    |

  19. A block of ice on earth floats on water with 9//10 of its volume subme...

    Text Solution

    |

  20. Statement-1: When an object is completely submerged in a liquid, the b...

    Text Solution

    |