Home
Class 12
PHYSICS
Block A weighs 4 N and block weigh 8 N T...

Block A weighs `4 N` and block weigh `8 N` The coefficient of kinetic friction is `0.25` for all surface find the force `F` to slide `B` at a constant speed when (a)`A` rest on `B` and moves with it (b) `A` is held at rest and (c )`A and B` are connected by a light cord passing over a smooth putting as shown in fig 7.31 (a - c) restively.

A

2N

B

3N

C

1N

D

5N

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    DISHA|Exercise physics|30 Videos

  • MAGNETIC EFFECTS OF CURRENT

    DISHA|Exercise physics|80 Videos

Similar Questions

Explore conceptually related problems

Block A weights 4 N and block B weights 8 N. The coefficient of kinetic friction is 0.25 for all surfaces. The force F to slide B at a constant speed, when A rests on B and moves with it, is

Block A as shown in Fig weighs 2.0 N and block B weighs 6.0 N The coefficient of ikinetic friction between all surface is 0.25 Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A and B are connected by a light , flxeible cord passing around a fixed, frictionless pulley

Block A in figure-2.207 weights 2.7N and block B weighs 5.4 N the coefficient of kinetic friction between all surfaces is 0.25. Find the magnitude of the horizontal force F necessary to drag blocks to the left at constant speed if A and B are connected by a light, flexible cord passing around a fixed frictionless pulley

Block A as shown in figure weight 1.40 N and block B weight 4.20 N The coefficient of kinetic friction between all surface is 0.30 Find the magnitude of the horizontal force necessary to drag block B to the left at constant speed if A and B are connected by a light , fiexible cort passing around a fixed , frictionless pulled.

Two blocks A and B , each of mass 10 kg , are connected by a light string passing over a smooth pulley as shown in the figure. Block A will remain at rest if the friction on it is

In the diagram shown, the blocks A, B and C weight, 3kg, 4kg and 5kg respectively. The coefficient of sliding friction between any two surface is 0.25. A is held at rest by a massless rigid rod fixed to the wall while B and C are connected by a light flexible cord passing around a frictionless pulley. Find the force F necessary to drag C along the horizontal surface to the left at constant speed. Assume that the arrangement shown in the diagram, B on C and A on B, is maintained all through. (g=9.8m//s^2)

Block B rests on a smooth surface .The coefficient of static friction between A and B is mu = 0.4 where F = 30 N then Acceleration of upper block is

Block B rests on a smooth surface .The coefficient of static friction between A and B is mu = 0.4 where F = 30 N then Acceleration of lower block is

Two blocks are connected over massless pulley as shown in figure. The mass of block Ais 10 kg and the coefficient of kinetic friction is 0.2 .Block A sliders down the incline at constant speed. The mass of block B in kg is

DISHA-LAWS OF MOTION-physics
  1. The coefficient of static friction between a block of mass m and an in...

    Text Solution

    |

  2. The coefficient of static friction between the two blocks shown in fig...

    Text Solution

    |

  3. Block A weighs 4 N and block weigh 8 N The coefficient of kinetic fric...

    Text Solution

    |

  4. Block A weighs 4 N and block weigh 8 N The coefficient of kinetic fric...

    Text Solution

    |

  5. Block A weight 4N and block B weighs 8N The coefficient of kinetic fri...

    Text Solution

    |

  6. Find the maximum value of (M/m) in the situation shown in figure so th...

    Text Solution

    |

  7. A block placed on a horizotnal surface is being pushed by a force F ma...

    Text Solution

    |

  8. Assuming the length of a chain to be L and coefficient of static frict...

    Text Solution

    |

  9. If the coefficient of friction between an insect and bowl is mu and th...

    Text Solution

    |

  10. A body of mass m is released from the top of a rough inclined plane as...

    Text Solution

    |

  11. A block of mass 2 kg is placed on the floor. The coefficient of static...

    Text Solution

    |

  12. A block is kept on a horizontal table. The stable is undergoing simple...

    Text Solution

    |

  13. Two cars of unequal masses use similar tyres. If they are moving at th...

    Text Solution

    |

  14. Consider the situation shown in figure. The wall is smooth but the sur...

    Text Solution

    |

  15. A block is placed on a rough floor and a horizontal force F is applie...

    Text Solution

    |

  16. The contact force exerted by a body A on another body B is equal to th...

    Text Solution

    |

  17. It is easier to pull a body than to push, because -

    Text Solution

    |

  18. A block of metal is lying on the floor of a bus. The maximum accelerat...

    Text Solution

    |

  19. Choose the correct statements – (1) Kinetic friction is lesser than ...

    Text Solution

    |

  20. Choose the correct statements – (1) Force of friction is partically ...

    Text Solution

    |