Home
Class 11
PHYSICS
A mass of M kg is suspended by a weightl...

A mass of M kg is suspended by a weightless string. The horizontal force that is required to displace it until the string makes an angle of `45^@` with the initial vertical direction is

A

`Mg`

B

`(Mg)/(sqrt2)`

C

`Mg(sqrt2+1)`

D

`sqrt2Mg`

Text Solution

Verified by Experts

The correct Answer is:
A
`"Tan" theta = (F)/(mg)`
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    NARAYNA|Exercise LEVEL -II (C.W)|71 Videos

  • NEWTONS LAWS OF MOTION

    NARAYNA|Exercise LEVEL -III|31 Videos

  • NEWTONS LAWS OF MOTION

    NARAYNA|Exercise C.U.Q|73 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

A mass M is suspended by a weightless string The horizontal force required to hold the mass 60^(@) with the vertical is .

Derermine the horizontal force required to displace a mass of 0.03 kg suspended by a string until the string makes an angle 30^(0) with the vertical.

A body of mass sqrt3 kg is suspended by a string to rigid support.The body is pulled horizontally by a force F until the string makes an angle of 30^(@) with the vertical.The value of F and tension in the string are

A mass of 10 kg is suspended from a spring balance. It is pulled aside by a horizontal string so that it makes an angle of 60^(@) with the vertical. The new rading of the balance is

A stone of mass 1 kg is whirled in horizontal circle attached at the end of a 1 m long string. If the string makes an angle of 30^(@) with vertical, calculate the centripetal force acting on the stone. (g=9.8" m"//"s"^(2)) .

A bob of mass m attached to an inextensible string of length l, is suspended from a vertical support. Bob rotates in a horizontal circle with angular speed omega and string makes an angle of theta with the vertical. Find the angular momentum of bob about axis of rotation

A heavy particle of mass 1kg suspended from a massless string attached to a roof. A horizontal force F is applied to the particle such that in the equilibrium position the string makes and angle 30^(@) with the vertical. The magnitude of the force F equals .

A mass of 10 kg is suspended from a spring balance, it is pulled aside by a horizontal string so that it makes an angle 60^(@) with the vertical. The new reading of the balance is:

NARAYNA-NEWTONS LAWS OF MOTION-LEVEL -I (C.W)
  1. A bomb of mass 6kg initially at rest explodes in to three identical fr...

    Text Solution

    |

  2. A mass of 10kg is suspended by a rope of length 2.8m from a ceiling. A...

    Text Solution

    |

  3. A mass of M kg is suspended by a weightless string. The horizontal for...

    Text Solution

    |

  4. The coefficients of static and dynamic friction are 0.7 and 0.4 The mi...

    Text Solution

    |

  5. The coefficients of static friction between contact surface of two bod...

    Text Solution

    |

  6. Brakes are applied to car moving with disengaged engine, bringing it t...

    Text Solution

    |

  7. A book of weight 20N is pressed between two hands and each hand exerts...

    Text Solution

    |

  8. A car running with a velocity 72 kmph on a level road is stoped after ...

    Text Solution

    |

  9. In the above problem car got a stopping distance of 80m on cement road...

    Text Solution

    |

  10. A 10 kg mass is resting on a horizontal surface and horizontal force o...

    Text Solution

    |

  11. A block of mass 20kg is pushed with a horizontal force of 90N. It the ...

    Text Solution

    |

  12. A force of 150N produces an acceleration of 2ms^(-2) in a body and a f...

    Text Solution

    |

  13. A heavy uniform chain lies on horizontal table top. If the coefficient...

    Text Solution

    |

  14. The angle of inclination of an inclined plane is 60^(@). Coefficient o...

    Text Solution

    |

  15. The angle of inclination of an inclined plane is 60^(@). Coefficient o...

    Text Solution

    |

  16. The angle of inclination of an inclined plane is 60^(@). Coefficient o...

    Text Solution

    |

  17. The angle of inclination of an inclined plane is 60^(@). Coefficient o...

    Text Solution

    |

  18. When a body slides down an inclined plane with coefficient of friction...

    Text Solution

    |

  19. A brick of mass 2kg begins to slide down on a plane inclined at an ang...

    Text Solution

    |

  20. The lengths of smooth & rough inclined planes of inclination 45^(@) is...

    Text Solution

    |