Home
Class 12
PHYSICS
A weight W rests an on rough horizontal ...

A weight W rests an on rough horizontal plane. If the angle of friction be `theta`, then calculate least horizontal force that will move the body along the plane.

A

`W cos theta`

B

` W tan theta`

C

` W cot theta `

D

`W sin theta`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    AAKASH SERIES|Exercise EXERCISE - II|136 Videos

  • GEOMETRICAL OPTICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|10 Videos

  • LOGIC GATES

    AAKASH SERIES|Exercise Exercise (Very Short Answer)|10 Videos

Similar Questions

Explore conceptually related problems

A weight W rests on a rough horizontal plane,If the angle of friction is theta ,the least force that can move the body along the plane will be

A block of mass 5kg is placed on a rough horizontal plane whose coefficient of friction is 0.3 . Find the least horizontal force needed to move the block along the plane and the resultant of normal reaction and the force applied.

A block of weight 100N is lying on a rough horizontal surface. If coefficient of friction 1//sqrt(3) . The least possible force that can move the block is

A block of mass m is placed at rest on an inclination theta to the horizontal. If the coefficient of friction between the block and the plane is mu , then the total force the inclined plane exerts on the block is

A block of mass m slides down an inclined plane which makes an angle theta with the horizontal. The coefficient of friction between the block and the plane is mu . The force exerted by the block on the plane is

A block of mass m rests on a rough inclined plane. The coefficient of friction between the surface and the block is µ. At what angle of inclination theta of the plane to the horizontal will the block just start to slide down the plane?

Assertion: A body slides down an inclined plane if the angle of friction is more than the angle of the inclined plane with the horizontal. Reason : When the angle of inclination is equal to the angle of friction, the component of weight parallel to the plane is just sufficient to overcome the frictional force.

A body of mass 10kg is on a rough inclined plane having an inclination of 30° with the horizontal. If coefficient of friction between the surfaces of contact of the body and the plane is 0.5. Find the least force required to pull the body up the plane.

A block of mass 2kg rests on a rough inclined plane making an angle of 30^@ with the horizontal. The coefficient of static friction between the block and the plane is 0.7. The frictional force on the block is

A block of mass 2kg rests on a rough inclined plane making an angle of 30^@ with the horizontal. The coefficient of static friction between the block and the plane is 0.7. The frictional force on the block is

AAKASH SERIES-LAWS OF MOTION-PRACTICE EXERCISE
  1. A block of mass 2kg lying on ice when given a velocity of 6ms^(-1) is ...

    Text Solution

    |

  2. A block of weight 200N is pulled along a rough horizontal surface at c...

    Text Solution

    |

  3. A weight W rests an on rough horizontal plane. If the angle of frictio...

    Text Solution

    |

  4. A heavy uniform chain lies on horizontal table top. If the co-efficien...

    Text Solution

    |

  5. A body moves along a circular path of radius 1m & mu = 0.4. The maximu...

    Text Solution

    |

  6. The value of escape speed from the surface of earth is

    Text Solution

    |

  7. A block of mass 1kg lies on a horizontal surface in a truck. The coeff...

    Text Solution

    |

  8. A wooden box is placed on the back part of a lorry moving with an acce...

    Text Solution

    |

  9. A block is placed at distance of 2m from the rear on the floor of a tr...

    Text Solution

    |

  10. A body of mass 5kg rests on a rough horizontal surface of coefficient ...

    Text Solution

    |

  11. A block of mass 1 kg is pressed against a wall by applying a horizonta...

    Text Solution

    |

  12. A man holds a 2 kg book between his palms. so that each hand exerts th...

    Text Solution

    |

  13. A duster weighs 0.5N. It is pressed against a vertical board with a ho...

    Text Solution

    |

  14. A body is in contact with the vertical front part of the truck. The co...

    Text Solution

    |

  15. A body of mass M is pressed between two hands. Each hand exerts a hori...

    Text Solution

    |

  16. On a smooth table two blocks of masses 2.5kg and 1.5kg are placed one ...

    Text Solution

    |

  17. If the angle of inclination of the inclined plane is sin^(-1) ((1)/(2)...

    Text Solution

    |

  18. A block rests on a rough inclined plane making an angle of 30^(@) with...

    Text Solution

    |

  19. A given object takes n times more time to slide down a 45^(@) rough i...

    Text Solution

    |

  20. A block sliding down a rough 45° inclined plane has half the velocity ...

    Text Solution

    |