Home
Class 11
PHYSICS
A mass of 200 kg is placed on a rough in...

A mass of 200 kg is placed on a rough inclined plane of angle `30^(@)` . If coefficient of limiting friction is `1 // sqrt 3` , find the least forces in newton , acting parallel to the plane (i) to keep the mass from sliding down (ii) to move the mass up the plane.

Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION : FRICTION

    SL ARORA|Exercise Problems|17 Videos
  • LAWS OF MOTION : FRICTION

    SL ARORA|Exercise Self Practice|95 Videos
  • Laws of Motion

    SL ARORA|Exercise Exercise|627 Videos
  • Mathematical tools

    SL ARORA|Exercise Exercise|20 Videos

Similar Questions

Explore conceptually related problems

A body of mass 10 kg is placed on an inclined surface of angle 30^(@) . If coefficient of limiting friction is 1 //sqrt3 , find the inclined plane. Force is being exerted parallel to the inclined plane .

A mass of 100kg is resting on a rough inclined plane of angle 30^(@) If the coefficient of friction is 1//sqrt3 find the greatest and the least forces that acting parallel to the plane in both cases just maintain the mass in equilibrium .

A body weighing 20 kg just slides down a rough inclined plane that rises 5 in 12. The coefficient of friction is

A metal block of mass 0.5 kg is placed on a plane inclined to the horizontal at an angle of 30^(@) . If the coefficient of friction is 0.2 , what force must be applied (i) to just prevent the block from sliding down the inclined plane (ii) to just move the block up the inclined plane and (iii) to move it up the inclined plane with an acceleration of 20cms^(-2) ?

A block of mass 3 kg slides on a rough fixed inclined plane of 37^(@) angle having coefficient of friction 0.5. find the resultant force exerted by plane on the block.

A block of mass m = 3 kg slides on a rough inclined plane of cofficient of friction 0.2 Find the resultant force offered by the plane on the block

A body of mass 10 kg is lying on a rough plane inclined at an angle of 30^(@) to the horizontal and the coefficient of friction is 0.5. the minimum force required to pull the body up the plane is

A 20kg box is gently placed on a rough inclined plane of inclination 30^(@) with horizontal. The coefficient of sliding friction between the box and the plane is 0.5.Find the acceleration of the box down the incline.

A body of mass 2 kg is placed on rough horizontal plane. The coefficient of friction between body and plane is 0.2 Then,

A block of mass 10 kg is kept on a fixed rough (mu=0.8) inclined plane of angle of inclination 30^(@) . The frictional force acting on the block is

SL ARORA-LAWS OF MOTION : FRICTION-Self Practice
  1. A mass of 200 kg is placed on a rough inclined plane of angle 30^(@) ....

    Text Solution

    |

  2. A force acts for 10 s on a body of mass 10 kg after which the force ce...

    Text Solution

    |

  3. A truck starts from rest and rolls down a hill with a constant acceler...

    Text Solution

    |

  4. A force of 5N gives a mass m(1), an acceleration of 8 m//s^(2), and a ...

    Text Solution

    |

  5. A body of mass 1 kg is acted upon by a force of 4000 dyne. As a result...

    Text Solution

    |

  6. A motor car of mass 20 quintal moving with velocity of 60 kmh^(-1), b...

    Text Solution

    |

  7. In an X-ray machine an electron is subjected to a force of 10^(-23) N ...

    Text Solution

    |

  8. A stone of mass 5kg falls from the top of a cliff 50m high and buries ...

    Text Solution

    |

  9. A bus starts from rest accelerating unifromly with 4 ms^(-2) . At t =...

    Text Solution

    |

  10. A motor car running at the rate of 7ms^(1) can be stooped by applying ...

    Text Solution

    |

  11. A force of 50N is inclined to the vertical at an angle of 30^(@) Find ...

    Text Solution

    |

  12. A sooterist moving with a speed of 36kmh^(-1) sees a child standing in...

    Text Solution

    |

  13. A ship of mass 3xx10^7kg initially at rest, is pulled by a force of 5x...

    Text Solution

    |

  14. A body of mass 5 kg is acted upon by two perpendicular forces of 4 N a...

    Text Solution

    |

  15. Forces of 5sqrt2 and 6sqrt2N are acting on a body of mass 1000 kg at a...

    Text Solution

    |

  16. A bullet of mass 50g moving with a speed of 500 ms^(-1) is brought to ...

    Text Solution

    |

  17. A cricket ball of mass 150 kg is moving with a velocity of 12 m//s and...

    Text Solution

    |

  18. A hammer weighing 3 kg moving with a velocity of 10ms^(-1) strikes aga...

    Text Solution

    |

  19. A rubber ball of mass 50g falls from a height of 100cm and rebounds to...

    Text Solution

    |

  20. Two billiard balls each of mass 0 .05 kg moving in opposite directions...

    Text Solution

    |

  21. A machine gun has a mass of 20kg It fires 30g bullets at the rate of 4...

    Text Solution

    |