Home
Class 12
PHYSICS
The figure shown blocks A and B are mass...

The figure shown blocks A and B are mass 2 kg and 8 kg and they are connected through strings to a spring connected to ground. The blocks are in equilbrium. `(g=10m//s^(2))`

Now the block A is pulled downwards by a force gradually increasing to 20 N. The new elongation of spring is ,-

A

2 cm

B

4 cm

C

20 cm

D

40 cm

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (O-2)|31 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (JM)|6 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (S-2)|9 Videos

  • MOTION IN A PALNE

    ALLEN |Exercise SOLVED EXAMPLE|28 Videos

  • NEWTONS LAWS OF MOTION

    ALLEN |Exercise EXERCISE-III|28 Videos

Similar Questions

Explore conceptually related problems

The figure shown blocks A and B are mass 2 kg and 8 kg and they are connected through strings to a spring connected to ground. The blocks are in equilbrium. (g=10m//s^(2)) The elongation of the spring is

The figure shown blocks A and B are mass 2 kg and 8 kg and they are connected through strings to a spring connected to ground. The blocks are in equilbrium. (g=10m//s^(2)) Now the force on A is suddenly removed. The acceleration of block B becomes :-

Two blocks A and B of mass m and 2m respectively are connected by a massless spring of spring constant K . This system lies over a smooth horizontal surface. At t=0 the bolck A has velocity u towards right as shown while the speed of block B is zero, and the length of spring is equal to its natural length at that at that instant. {:(,"Column I",,"Column II"),((A),"The velocity of block A",(P),"can never be zero"),((B),"The velocity of block B",(Q),"may be zero at certain instants of time"),((C),"The kinetic energy of system of two block",(R),"is minimum at maximum compression of spring"),((D),"The potential energy of spring",(S),"is maximum at maximum extension of spring"):}

A block A and wedge B connected through a string as shown. The wadge B is moving away from the wall with acceleration 2m//s^(2) horizonally and acceleration of block A is vertical upwards. Then

A block P of mass m is placed on horizontal frictionless plane. A second block of same mass m is placed on it and is connected to a spring of spring constant k, the two blocks are pulled by distance A. Block Q oscillates without slipping. What is the maximum value of frictional force between the two blocks.

A block of mass m is placed on a smooth horizontal floor is attached to one end of spring. The other end of the spring is attached to fixed support. When spring is vertical it is relaxed. Now the block is pulled to wards right by a force F, which is being increased gradually. When the speing makes angle 53^(@) with the vertical, block leaves the floor. When blocks leaves the table, the normal force on it from table is

A block of mass m is placed on a smooth horizontal floor is attached to one end of spring. The other end of the spring is attached to fixed support. When spring is vertical it is relaxed. Now the block is pulled to wards right by a force F, which is being increased gradually. When the speing makes angle 53^(@) with the vertical, block leaves the floor. When the block leaves the table, the force F is :-

A block of mass m is placed on a smooth horizontal floor is attached to one end of spring. The other end of the spring is attached to fixed support. When spring is vertical it is relaxed. Now the block is pulled to wards right by a force F, which is being increased gradually. When the speing makes angle 53^(@) with the vertical, block leaves the floor. Force constant of the spring is :-

Two blocks A and B of mass 2 kg and 4 kg respectively are placed on a smooth inclined plane and 2 kg block is pushed by a force F acting parallel to the plane as shown. If N be the magnitude of contact force applied on B by A, which of the following is/are correct?

Two springs are connected to a block of mass M is placed on a frictionless surface as shown in figure. If both springs have a spring constant k, the frequency of oscillation of the block is………

ALLEN -NEWTON'S LAWS OF MOTION & FRICTION-EXERCISE (O-1)
  1. A block is pushed with some velocity up a rough inclined plane. It sto...

    Text Solution

    |

  2. A system is pushed by a force F as shown in figure All surfaces are sm...

    Text Solution

    |

  3. Refer the system shown in the figure. Block is siding down the wedge. ...

    Text Solution

    |

  4. A block of mass 1 kg is held at rest against a rough vertical surface ...

    Text Solution

    |

  5. A block is kept on a rough horizontal surface as shown. Its mass is 2 ...

    Text Solution

    |

  6. The mass in the figure can slide on a frictionless surface. When the m...

    Text Solution

    |

  7. A carpenter of mass 50 kg is standing on a weighing machine placed in ...

    Text Solution

    |

  8. In the system in the figure m(1)gtm(2) system is held at rest by threa...

    Text Solution

    |

  9. A uniform rope of mass (m) and length (L) placed on frictionless horiz...

    Text Solution

    |

  10. A uniform rope of mass (m) and length (L) placed on frictionless horiz...

    Text Solution

    |

  11. A uniform rope of mass (m) and length (L) placed on frictionless horiz...

    Text Solution

    |

  12. The figure shown blocks A and B are mass 2 kg and 8 kg and they are co...

    Text Solution

    |

  13. The figure shown blocks A and B are mass 2 kg and 8 kg and they are co...

    Text Solution

    |

  14. The figure shown blocks A and B are mass 2 kg and 8 kg and they are co...

    Text Solution

    |

  15. The blocks are on frictionless inclined ramp and connected by a massle...

    Text Solution

    |

  16. The blocks are on frictionless inclined ramp and connected by a massle...

    Text Solution

    |

  17. The blocks are on frictionless inclined ramp and connected by a massle...

    Text Solution

    |

  18. In the diamram shown in figure , match the following (g=10m//s^(2))

    Text Solution

    |

  19. Match the situations in column I to the accelerations of blocks in the...

    Text Solution

    |

  20. A sphere of mass 10 kg is placed in equibriu in a V shaped groove plan...

    Text Solution

    |