Home
Class 11
PHYSICS
Two blocks A and B are joined together w...

Two blocks A and B are joined together with a compressed spring. When the system is released, the two bloks appear to be moving with unequal speeds in the opposite directions as shown in figure.
Select incorrect statements(s) :

A

The centre of mass of the system will remain stationary.

B

Mass of block A is equal to mas of block B.

C

The centre of mass of the system will move towards right.

D

It is an impossible physical situation.

Text Solution

Verified by Experts

The correct Answer is:
(BCD)

As net force on system `= 0` (after released)
So centre of mass of the system remains stationary.
Promotional Banner

Topper's Solved these Questions

  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-I|40 Videos
  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-II|43 Videos
  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise EXERCISE-IV ASSERTION & REASON|11 Videos
  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 5 B (Integer Type Questions)|3 Videos

Similar Questions

Explore conceptually related problems

Two identical blocks each of mass 1kg are joined together with a compressed spring. When the system is released the two blocks appear to be moving with unequal speeds in the opposite directions as shown in fig. Choose the correct statement -

When two identical balls are moving with equal speed in opposite direction, which of the following is true ? For the system of two bodies.

Relative speed of two persons moving with u m/s and vm/s in opposite direction where u>v

Two unequal masses are ties together with a cord with a compressed spring in between. When the cord is burnt with a match releasing the spring, the two masses fly apart with equal

Two identical blocks A and B of mass m joined together with a massless spring as shown in figure are placed on a smooth surface. If the block A moves with an acceleration a_0 , then the acceleration of the block B is

Two unequal masses are ties together with a cord with a compressed spring in between. Which of the following energies is conserved for the system?

Relative speed of two bodies moving in opposite direction with speed u and m/s .

Initially spring is compressed by x_(0) and blocks are in contact when system is released, then block starts moving and after some time contact between blocks, then

Two blocks of unequal masses are tied by a spring. The blocks are pulled stretching the spring slightly and the system is released on a frictionless horizontal platform. Are the forces due to the spring on the two blocks equal and opposite. If yes, is it can example of Newton's third law?

Assertion: Two blocks A and B are connected at the two ends of an ideal spring as shwon in figure. Initially, spring was released. Now block B is pressed. Linear momentum of the system will not remain constan till the spring reaches its initial natural length. Reason: An external force will act from the wall on block A.

ALLEN-CENTRE OF MASS-EXERCISE-V B
  1. Two blocks A and B are joined together with a compressed spring. When ...

    Text Solution

    |

  2. Two particles of masses m(1) and m(2) in projectile motion have veloci...

    Text Solution

    |

  3. Two blocks of masses 10 kg and 4 kg are connected by a spring of negli...

    Text Solution

    |

  4. A particle moves in the X-Y plane under the influence of a force such ...

    Text Solution

    |

  5. Two small particles of equal masses stant moving in opposite directio...

    Text Solution

    |

  6. Look at the drawing given in the figure which has been drawn with ink ...

    Text Solution

    |

  7. A particle of mass m is projected from the ground with an initial spee...

    Text Solution

    |

  8. A tennis ball dropped on a barizoontal smooth surface , it because bac...

    Text Solution

    |

  9. Two balls , having linear momenta vec(p)(1) = p hat(i) and vec(p)(2) =...

    Text Solution

    |

  10. STATEMENT-l : In an elastic collision between two bodies, the relative...

    Text Solution

    |

  11. Satement-1: if there is no external torque on a body about its centre ...

    Text Solution

    |

  12. A small block of mass M move on a frictionless surface of an inclimed...

    Text Solution

    |

  13. A small block of mass M move on a frictionless surface of an inclimed...

    Text Solution

    |

  14. A small block of mass M move on a frictionless surface of an inclimed...

    Text Solution

    |

  15. Two blocks of masses 2kg and M are at rest on an inclined plane and ar...

    Text Solution

    |

  16. A car P is moving with a uniform speed 5sqrt3 m//s towards a carriage ...

    Text Solution

    |

  17. A particle of mass m, moving in a cicular path of radius R with a cons...

    Text Solution

    |

  18. Two point masses m1 and m2 are connected by a spring of natural length...

    Text Solution

    |

  19. A rectangular plate of mass M and dimension axxb is held in horizonta...

    Text Solution

    |

  20. Three objects A , B and C are kept in a straight line on a smooth hori...

    Text Solution

    |