Home
Class 11
PHYSICS
A block of mass sqrt3 kg is kept on a fr...

A block of mass `sqrt3 kg` is kept on a frictional surface with `mu =(1)/(2sqrt3)`. The minimum force to be applied as shown the move the block is
.

A

`5N`

B

`20N`

C

`10N`

D

`20//3N`

Text Solution

Verified by Experts

The correct Answer is:
B

`N =mg + F sin theta, F cos theta = f,f = mu N`
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    NARAYNA|Exercise LEVEL -III|31 Videos
  • NEWTONS LAWS OF MOTION

    NARAYNA|Exercise NCERT BASED QUESTION|33 Videos
  • NEWTONS LAWS OF MOTION

    NARAYNA|Exercise LEVEL -I (C.W)|47 Videos
  • MOTION IN A STRAIGHT LINE

    NARAYNA|Exercise Level 2 H.W|29 Videos
  • OSCILLATIONS

    NARAYNA|Exercise EXERCISE - IV|41 Videos

Similar Questions

Explore conceptually related problems

As shown in the figure, a block of mass sqrt3 kg is kept on a horizontal rough surface of coefficient of friction 1/(3sqrt3) The critical force to be applied on the vertical surface as shown at an angle 60^@ with horizontal such that it does not move, will be 3x. The value of x will be [g=10m//s^2,sin60^@=sqrt3/2,cos60^@=1/2]

A block of mass 1 kg in kept on a rough horizontal surface with mu_(s)=0.1 . A force of 0.5 N is applied as shown in the figure. What is the frictional force applied by ground on the block?

A force F is applied on a block of mass sqrt(3) kg which rests on a horizontal surface with a coefficient of friction 1/(2sqrt3) . The maximum value of F for which the block doesn't move, is [Take g = 10 ms^(-2)]

A block of mass sqrt(3)//10kg is placed on a rough horizontal surface as shown in the figure. A force of 1N is applied at one end of the block and the block remains stationary. The normal force exerted by the sruface on the block acts(g=10 m//s^(2) )

A block of weight W is kept on a rough horizontal surface (friction coefficient mu ). Two forces W//2 each are applied as shown in the choose the correct statement .

A block of mass 70kg is kept on a rough horizontal surface (mu=0.4) . A person is trying to pull the block by applying a horizontal force, but the block is not moving. The net contact force exerted by the surface on the block is F , then:

A block of mass 4 kg is kept on a rough horizontal surface. The coefficient of static friction is 0.8. If a force of 19 N is applied on the block parallel to the floor, then the force of friction between the block and floor is

NARAYNA-NEWTONS LAWS OF MOTION-LEVEL -II (C.W)
  1. A block slides down a rough inclined plane of slope angle theta with a...

    Text Solution

    |

  2. The minimum force required to start pushing a body up rough (frictiona...

    Text Solution

    |

  3. The horizontal acceleration that should be given to a smooth inclined ...

    Text Solution

    |

  4. A body is released from the top of a smooth inclined plane of inclinat...

    Text Solution

    |

  5. The force required to move a body up a rough inclined plane is double ...

    Text Solution

    |

  6. A smooth block is released at rest on a 45^(@) incline and then slides...

    Text Solution

    |

  7. The upper half of an inclined plane with inclination phi is perfectly ...

    Text Solution

    |

  8. A 30kg box has to move up an inclined plane of slope 30^(@) the horizo...

    Text Solution

    |

  9. A block weighing 10kg is at rest on a horizontal table. The coefficien...

    Text Solution

    |

  10. Pulling force making an angle theta to the horizontal is applied on a ...

    Text Solution

    |

  11. A block of mass sqrt3 kg is kept on a frictional surface with mu =(1)/...

    Text Solution

    |

  12. A car is moving in a circular horizonta track of radius 10m with a con...

    Text Solution

    |

  13. A vehicle in moving with a velocity v on a carved total of width b and...

    Text Solution

    |

  14. The centripetal force required for a 1000 kg car travelling at 36kmph...

    Text Solution

    |

  15. A small coin is placed on a flat horizontal turn table. The turn table...

    Text Solution

    |

  16. A particle of mass m is suspended from a ceiling through a string of l...

    Text Solution

    |

  17. Three point masses each of mass m are joined together using a string t...

    Text Solution

    |

  18. A steel wire can withstand a load up to 2940N. A load of 150 kg is sus...

    Text Solution

    |

  19. A car is travelling along a curved road of radius r. If the coefficien...

    Text Solution

    |

  20. A boy of mass 50kg is standing on a weihing machine placed on the floo...

    Text Solution

    |