Home
Class 11
PHYSICS
One end of string of length l is connect...

One end of string of length `l` is connected to a particle on mass `m` and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in circle with speed `v` the net force on the particle (directed toward centre) will be (`T` reprents the tension in the string):

A

T

B

T - `mv^(2)`/l

C

T + `mv^(2)` / l

D

0

Text Solution

Verified by Experts

(i) T
The net force T on the particle is directed towards the centre . It provides the centripetal force required by the particle to move along a circle .
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    NCERT ENGLISH|Exercise EXERCISE|40 Videos
  • KINETIC THEORY

    NCERT ENGLISH|Exercise EXERCISE|14 Videos
  • MECHANICAL PROPERTIES OF FLUIDS

    NCERT ENGLISH|Exercise EXERCISE|31 Videos

Similar Questions

Explore conceptually related problems

Two particles of masses m and M(Mgtm) are connected by a cord that passes over a massless, frictionless pulley. The tension T in the string and the acceleration a of the particles is

Two particles of mass m and 2m are connected by a string of length L and placed at rest over a smooth horizontal surface. The particles are then given velocities as indicated in the figure shown. The tension developed in the string will be

A block of mass 1kg is tied to a string of length 1m the other end of which is fixed The block is moved on a smooth horizontal table with constant speed 10ms^(-1) . Find the tension in the string

A particle of mass m_(1) is fastened to one end of a string and one of m_(2) to the middle point, the other end of the string being fastened to a fixed point on a smooth horizontal table The particles are then projected, so that the two portions of the string are always in the same straight line and describes horizontal circles find the ratio of tensions in the two parts of the string

A particle of mass 'm' is attached to one end of a string of length 'l' while the other end is fixed to a point 'h' above the horizontal table, the particle is made to revolve in a circle on the table, so as to make P revolution per sec. The maximum value of P if the particle is to be contact with the table is

A particle of mass m is tied to a string of length L and whirled into a horizontal plan. If tension in the string is T then the speed of the particle will be :

A stone of mass m tied to a string of length l is rotated in a circle with the other end of the string as the centre. The speed of the stone is v. If the string breaks, the stone will move

Two particles of masses m_1 and m_2 are connected to a string and the system is rotated in a horizontal plane with 'P' as center. The ratio of tension in the two parts of string is

A particle of mass 2m is connected by an inextensible string of length 1.2 m to a ring of mass m which is free to slide on a horizontal smooth rod. Initially the ring and the particle are at the same level with the string taut. Both are then released simultaneously. The distance in meter moved by the ring when the string becomes veritcal is :-

A particle, held by a string whose other end is attached to a fixed point C, moves in a circle on a horizontal frictionless surface. If the string is cut, the angular momentum of the particle about the point C

NCERT ENGLISH-LAWS OF MOTION -EXERCISE
  1. A pebble of mass 0.05 kg is thrown vertically upwards Give the magnitu...

    Text Solution

    |

  2. Give the magnitude and direction of the force acting on a stone of mas...

    Text Solution

    |

  3. One end of string of length l is connected to a particle on mass m and...

    Text Solution

    |

  4. A constant retarding force of 50 N is applied to a body of mass 20 kg ...

    Text Solution

    |

  5. A constant force acting on a body of mass 3 kg changes its speed from ...

    Text Solution

    |

  6. A body of mass 5 kg is acted upon by two perpendicular forces 8 N and ...

    Text Solution

    |

  7. The driver of a three wheeler moving with a speed of 36 km//h sees a c...

    Text Solution

    |

  8. A rocket with a lift off mass 20000 kg is blasted upwards with a net i...

    Text Solution

    |

  9. A body of mass 0.40 kg moving initially with a constant speed of 10 m...

    Text Solution

    |

  10. A truck starts from rest and accelerate uniformly with 2 ms^(-2). At t...

    Text Solution

    |

  11. A bob of mass 0.1 kg hung from the ceiling of a room by a string 2 m l...

    Text Solution

    |

  12. A man of mass 70 kg stands on a weighing machine in a lift, which is m...

    Text Solution

    |

  13. Fig. shows the position-time graph of a particle of mass 4 kg. What is...

    Text Solution

    |

  14. Two bodies of masses 10 kg and 20 kg respectively kept on a smooth hor...

    Text Solution

    |

  15. Two masses 8 kg and 12 kg are connected at the two ends of a light in ...

    Text Solution

    |

  16. A nucleus is at rest in the laboratory frame of reference. Show that i...

    Text Solution

    |

  17. Two billiard balls each of mass 0.05 kg moving in opposite directions ...

    Text Solution

    |

  18. A shell of mass 200g is fired by a gun of mass 100kg. If the muzzle sp...

    Text Solution

    |

  19. A batsman deflects a ball by an angle of 45^(@) without changing its i...

    Text Solution

    |

  20. A stone of of mass 0.25 kg tied to the end of a string is whirled roun...

    Text Solution

    |