Home
Class 12
PHYSICS
Three blocks are connected as shown in t...


Three blocks are connected as shown in the figure. Valculate the minimum force required to move the body with constant velocity. The coefficient of friction at all surfaces is 0.25.

Text Solution

Verified by Experts



`F-(3mg)/(4)-(6mg)/(4)-T=0` (1)
`T-(mg)/(4)-(3mg)/(4)=0` ..(2)
`(1) and (2) `impliesF=13(mg)/(4)`
Promotional Banner

Topper's Solved these Questions

  • CENGAGE PHYSICS DPP

    CENGAGE PHYSICS ENGLISH|Exercise Single Correct Answer type|491 Videos
  • CAPACITOR AND CAPACITANCE

    CENGAGE PHYSICS ENGLISH|Exercise Integer|5 Videos
  • COULOMB LAW AND ELECTRIC FIELD

    CENGAGE PHYSICS ENGLISH|Exercise Single Answer Correct Type|22 Videos

Similar Questions

Explore conceptually related problems

Minimum force F required to move the block

Block of mass m are released from rest and they slide down the inclined surface as shown in figure. Show that the work done by the frictional forces on the blocks are same in all the cases. Also calculate the speeds with which the blocks reach point B. The coefficient of friction for all the surface is mu_k .

A20 kg block is initally at rest. A 75 N force is required to set the block in motion. After the motion starts, a force of 60 N is required to keep the block moving with constant speed. The coefficient of static friction is

The minimum force required to move a body up an inclined plane is three times the minimum force required to prevent it from sliding down the plane. If the coefficient of friction between the body and the inclined plane is (1)/(2sqrt(3)) , the angle of the inclined plane is

Find value of pulling force F for which block just moves. Given coefficient of friction for surface is mu .

A 20 kg block is initially at rest. A 75 N force is required to set the block in motion. After the motion a force of 60 N is applied to keep the block moving with constant speed. The coefficient of static friction is

A block system is shown in figure.Frictional force on

Two blocks A and B are lying on the table as shown in the figure. The coefficient of friciton between block A and block B is mu . The coefficient of friction between block B and ground also mu . An external force F is applied in the direction shown. The maximum value of the force F that can be applied without moving the blocks.

Find the minimum value of horizontal force (F) required on the block of mass m to keep it at rest on the wall. Given the coefficient of friction between the surfaces is mu .

Two blocks A (1 kg) and B (2 kg) are connected by a string passing over a smooth pulley as shown in the figure. B rests on rough horizontal surface and A rest on B. The coefficient of friction between A and B is the same as that between B and the horizontal surface. The minimum horizontal force F required to move A to the left is 25 N. The coefficient of friction is:

CENGAGE PHYSICS ENGLISH-CENGAGE PHYSICS DPP-subjective type
  1. The block of mass m is in equilibrium relative to the smooth wedge of ...

    Text Solution

    |

  2. A force F is applied on block A of mass M so that the tension in light...

    Text Solution

    |

  3. In pulley system shown in figure, block C is going up at 2(m)/(s) and ...

    Text Solution

    |

  4. System is shown in the figure and man is pulling the rope from both si...

    Text Solution

    |

  5. An ideal speing, with a pointer attached to its end, hangs next to a s...

    Text Solution

    |

  6. In an elevator a system is arranged as shown in figure. Initially elev...

    Text Solution

    |

  7. In the figure shoen calculate the angle of friction . The block dows n...

    Text Solution

    |

  8. A block of 7 kg is placed on a rough horizontal surface and is pulled ...

    Text Solution

    |

  9. The block of mass m(1) is placed on a wedge of an angle theta, as show...

    Text Solution

    |

  10. In the figure shown , the coefficient of static friction between B and...

    Text Solution

    |

  11. Two blocks of mass M and 3M (in kg) are connected by an inextensible l...

    Text Solution

    |

  12. Three blocks are connected as shown in the figure. Valculate the minim...

    Text Solution

    |

  13. The three flat blockss in the figure are positioned on the 37@ incline...

    Text Solution

    |

  14. 1 kg particle at a height of 4 m has a speed of 2 m/s down a incline m...

    Text Solution

    |

  15. A cone of mass m falls from a height h and penetrates into sand. The r...

    Text Solution

    |

  16. A particle of mass m=1kg lying on x-axis experiences a force given by ...

    Text Solution

    |

  17. A block of mass m is pushed against a spring of spring constant k fixe...

    Text Solution

    |

  18. Consider a one-dimensional motion of a particle with total energy E. T...

    Text Solution

    |

  19. A curved surface is shown in figure. The portion BCD is frictionless. ...

    Text Solution

    |

  20. A particle of mass 5kg is free to slide on a smooth ring of radius r=2...

    Text Solution

    |