Home
Class 12
PHYSICS
A block is placed on a smooth inclined p...

A block is placed on a smooth inclined plane as shown . For what value of horizontal force F, the block will remain at rest ?

A

`mg tan theta`

B

`mg sin theta`

C

`mg cos theta`

D

` mg cot theta`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION -C) objective type questions (More than one options are correct)|21 Videos
  • LAWS OF MOTION

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION -D) Linked Comprehension Type Question|1 Videos
  • LAWS OF MOTION

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION -A)|50 Videos
  • KINETIC THEORY

    AAKASH INSTITUTE ENGLISH|Exercise EXERCISE (ASSIGNMENT) SECTION - D Assertion - Reason Type Questions|10 Videos
  • MAGNETISM AND MATTER

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION D)|26 Videos

Similar Questions

Explore conceptually related problems

A block is placed on a smooth inclined plane at an angle 'theta' to the horizontal. The acceleration must the plane be moved horizontally so that the block to fall freely is

A block of mass m is placed on a smooth inclined plane of inclination theta with the horizontal. The force exerted by the plane on the block has a magnitude

A block of mass m is placed on a smooth inclined plane of inclination theta with the horizontal. The force exerted by the plane on the block has a magnitude

A block is placed on a rough horizontal plane. Three horizontalforces are applied on the block as shown in the figure. If the block is in equilibrium, find the friction force acting on the block.

Figure shows a block kept on a rough inclined plane. The maximum external force down the incline for which the block remains at rest is 1 N while the maximum external force up the incline for which the block is at rest is 7 N. The coefficient of static friction mu is:

A block of mass m = 4 kg is placed over a rough inclined plane as shown in fig . The coefficient of friction between the block and the plane mu = 0.5 A force F = 10N is applied on the block at an angle of 30^(@) . Find the contact force between the block and the plane. k

A block of mass 1kg is placed on a rough horizontal surface. A spring is attached to the block whose other end is joined to a rigid wall, as shown in the figure. A horizontal force is applied on the block so that it remains at rest while the spring is elongated by x(x ge (mumg)/(k)) . Let F_(max) and F_(mi n) be the maximum and minimum values of force F for which the block remains in equilibrium. For a particular x, F_(max)-F_(mi n)=2N . Also shown is the variation of F_(max)+F_(mi n) versus x , the elongation of the spring. The coefficient of friction between the block and the horizontal surface is :

A body is placed on a smooth inclined plane of inclination 1 in x. The horizontal acceleration to be given to the inclined plane so that the body on it remains at rest with respect to inclined plane is

Figure shows a block kept on a rough inclined plane. The maximum external force along the plane downwards for which the block remains at rest is 1N while the maximum external force along the incline upwards for which the block is rest is 7N. The coefficient of static friction mu is

A block of mass m is placed on a rough inclined plane. The corfficient of friction between the block and the plane is mu and the inclination of the plane is theta .Initially theta=0 and the block will remain stationary on the plane. Now the inclination theta is gradually increased . The block presses theinclined plane with a force mgcostheta . So welding strength between the block and inclined is mumgcostheta , and the pulling forces is mgsintheta . As soon as the pulling force is greater than the welding strength, the welding breaks and the blocks starts sliding, the angle theta for which the block start sliding is called angle of repose (lamda) . During the contact, two contact forces are acting between the block and the inclined plane. The pressing reaction (Normal reaction) and the shear reaction (frictional force). The net contact force will be resultant of both. Answer the following questions based on above comprehension: Q. For what value of theta will the block slide on the inclined plane:

AAKASH INSTITUTE ENGLISH-LAWS OF MOTION-ASSIGNMENT ( SECTION -B) objective type questions (one option is correct)
  1. A block of mass 'm' is held stationary against a rough wall by applyin...

    Text Solution

    |

  2. A block is placed on a smooth inclined plane as shown . For what value...

    Text Solution

    |

  3. In the figure shown , two blocks of masses 2 kg and 4kg are connected ...

    Text Solution

    |

  4. Figure shows a small ball of mass m held at rest by means of two light...

    Text Solution

    |

  5. Force is applied on an object of mass 2 kg at rest on a frictionless h...

    Text Solution

    |

  6. In the arrangement shown, what is the normal reaction the block A ( ma...

    Text Solution

    |

  7. A block of mass 2 kg rests on the floor of an elevator , which is movi...

    Text Solution

    |

  8. A disc of radius 4 m is rotating about its fixed center with a constan...

    Text Solution

    |

  9. A circular track of radius 600 m is tio be designed for cars at an ave...

    Text Solution

    |

  10. A particle of mass m is moving on a circular path of radius r with uni...

    Text Solution

    |

  11. A block of mass m is kept on a plank . The coefficient of friction bet...

    Text Solution

    |

  12. A force of 100 N is applied on a block of mass 3 kg as shown in figure...

    Text Solution

    |

  13. A block of mass 5 kg is placed on a rough horizontal plane . The coeff...

    Text Solution

    |

  14. In the figure shown coefficient of friction between 8 kg block and sur...

    Text Solution

    |

  15. In the arrangement shown in figure coefficient of friction between 5kg...

    Text Solution

    |

  16. At a certain moment of time, acceleration of the block A is 2 m//s^(2)...

    Text Solution

    |

  17. A train is moving forward with a horizontal acceleration a. A man sitt...

    Text Solution

    |

  18. If pulley and all strings as shown are massless, then tension T(2) = 1...

    Text Solution

    |

  19. A block of mass 2 kg rests on an inclined plane of inclination angle 3...

    Text Solution

    |

  20. All surfaces shown in the figure are frictionless. A block of mass 2 k...

    Text Solution

    |