Home
Class 12
PHYSICS
Two blocks of masses 7 kg and 3 kg are c...

Two blocks of masses 7 kg and 3 kg are connected by a spring of stiffness `1000Nm^(-1)` and placed on a smooth horizontal surface. They are acted by horizontal forces of 72 N and 32 N in opposite directions as shown in the figure. When accelerations of the blocks are equal and constant, the extension of the spring is

A

4 cm

B

5 cm

C

6 cm

D

8 cm

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • APPENDICES (REVISION EXERCISE)

    AAKASH SERIES|Exercise MOTION IN A PLANE|87 Videos

  • APPENDICES ( REVISION EXERCISE )

    AAKASH SERIES|Exercise REVISION EXERCISE (MAGNETISM AND MATTER )|52 Videos

  • ATOMS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|21 Videos

Similar Questions

Explore conceptually related problems

Two block of mass 1 kg and 2 kg are connected by a string AB of mass 1 kg . The blocks are placed on a smooth horizontal surface. Block of mass 1 kg is pulled by a horizontal force F of magnitude 8 N . Find the tension in the string at points A and B

Two blocks of masses 10 kg and 20 kg are connected by a massless string and are placed on a smooth horizontal surface as shown in the figure. If a force F=600 N is applied to 10 kg block, then the tension in the string is

Two blocks A and B of masses 3 kg and 6 kg are connected by a massless spring of force constant "1800 N m"^(-1) and then they are placed on a smooth horizontal surface. The blocks are pulled apart to stretch the spring by 5 cm and then released. What is the relative velocity (in ms^(-1) ) of the blocks when the spring comes to its natural length?

Two blocks of masses 5kg and 2kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse provides a velocity of 7m/s to the heavier block in the direction of the lighter block. The velocity of the centre of mass is :-

Two blocks of masses 5kg and 2kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse provides a velocity of 7m/s to the heavier block in the direction of the lighter block. The velocity of the centre of mass is :-

Two blocks of masses 5kg and 2kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse provides a velocity of 7m/s to the heavier block in the direction of the lighter block. The velocity of the centre of mass is :-

Two blocks of masses m and M connected by a light spring of stiffness k, are kept on a smooth horizontal surface as shown in figure. What should be the initial compression of the spring so that the system will be about to break off the surface, after releasing the block m_1 ?

Two blocks of masses 1 kg and 2 kg are placed in contact on a smooth horizontal surface as shown in fig. A horizontal force of 6N is applied d(a) on a 1-kg block. Find the force of interaction of the blocks. .

Two blocks of masses m_1 =1kg and m_2 = 2kg are connected by a spring of spring constant k = 24 N/m and placed on a frictionless horizontal surface. The block m_(1) is imparted an initial velocity v_(0) = 12cm/s to the right. The amplitude of oscillation is

Two blocks of mass 2 kg and 4 kg are accelerated with same acceleration by a force 10 N as shown in figure on a smooth horizontal surface. Then the spring force between the two blocks will be (spring is massless)

AAKASH SERIES-APPENDICES (REVISION EXERCISE)-LAW OF MOTION
  1. In the system shown in figure m(1) gt m(2). System is held at rest by ...

    Text Solution

    |

  2. A lift is going up, the total mass of the lift and the passengers is 1...

    Text Solution

    |

  3. Two blocks of masses 7 kg and 3 kg are connected by a spring of stiffn...

    Text Solution

    |

  4. A block of 2 kg is suspended from the ceiling through a massless sprin...

    Text Solution

    |

  5. A body is placed on a smooth inclined plane of inclination 1 in x. The...

    Text Solution

    |

  6. A block is placed on a smooth inclined plane at an angle 'theta' to th...

    Text Solution

    |

  7. For what value of 'a' block slides up the Plane with an acceleration '...

    Text Solution

    |

  8. A pendulum is hanging from the ceiling of a cage. When the cage is mov...

    Text Solution

    |

  9. A train is moving forward at a velocity of 2.0m/s. At the instant the ...

    Text Solution

    |

  10. In given figure all surfaces are smooth. The ratio of forces exerted b...

    Text Solution

    |

  11. A car is moving in a circular horizontal track of radius 10 m with a c...

    Text Solution

    |

  12. A block of mass m, is kept on a wedge of mass M, as shown in figure su...

    Text Solution

    |

  13. A block of mass m lying on a rough horizontal plane is acted upon by a...

    Text Solution

    |

  14. A block of mass sqrt(3) kg is kept on a frictional surface  with mu = ...

    Text Solution

    |

  15. A cubical block of mass 'm' rests on rough horizontal surface. mu is c...

    Text Solution

    |

  16. Two blocks of masses 3kg and 2kg are placed beside each other in conta...

    Text Solution

    |

  17. A suitcase is gently dropped on a conveyor belt moving at a velocity o...

    Text Solution

    |

  18. An aeroplane requires a speed of 72 kmph for a take off with 150m run ...

    Text Solution

    |

  19. A block of mass'm' is placed on floor of a lift which is rough. The co...

    Text Solution

    |

  20. A block is gently placed on a conveyor belt moving horizontally with c...

    Text Solution

    |