Home
Class 12
PHYSICS
A bob P is suspended by the means of thr...

A bob P is suspended by the means of thread from point Q. Length of thread is l. If bob is given a velocity u as shown, the change in velocity of bob at an instant when thread becomes horizontal is

A

`sqrt(u^2 + gl)`

B

`sqrt(2u^2 - 2gl)`

C

`sqrt(u^2 - gl)`

D

`sqrt(u^2 - 2gl)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • JEE MAIN 2021

    JEE MAINS PREVIOUS YEAR|Exercise PHYSICS SECTION B|30 Videos

  • JEE MAIN 2023

    JEE MAINS PREVIOUS YEAR|Exercise Question|455 Videos

Similar Questions

Explore conceptually related problems

A sphere is suspended by a thread of length l. What minimum horizontal velocity has to be imparted the ball for it to reach the height of the suspension?

A bob is attached to a string of length l whose other end is fixed and is given horizontal velocity at the lowest point of the circle so that the bob moves in a vertical plane. Match the velocity given at the lowest point of circle in column I with tension and velocity at the highest point of the circle corresponding to velocity of column I of column II

A bob tied to the end of a string of length 2m, other end of which is fixed at a point in a vertical wall at a point O. The bob is imparted a vertical downward velocity of 5 m//s when the string is horizontal and swings in a vertical plane. Find the angular displacement of the bob from its initial position, when the string breaks. Given that the tensile strength of the string is twice the weight of the bob. Take g=10 m//s^(2)

The free end of a thread wound on a bobbin is passed round a nail A hammered into the wall. The thread is pulled at a constant velocity 'v' . Assuming pure rolling of bobin, find the velocity v_(0) of the centre of the bobbin at the instant when the thread forms an angle alpha with the vertical: ( R and r are outer and inner radii off the babbin)

A bob of mass 'm' suspended by a thread of length I undergoes simple harmonic osillations with time peroid T. If the bob is immersed in a liquiod tha has density (1)/(4) times that of the bob and the length of the thread is increased by 1//3^(rd) of the original length ,then the time period of the simple harmonic oscilltions will be :

The length of a simple pendulum is 1 m . The bob is given a velocity 7 ms^(-1) in horizontal direction from mean position. During upward motion of bob, if the string breaks when the bob is horizontal, then the maximum vertical height of ascent of bob from rest position is

A pendulum bob is rotated in a vertical circle with one end of string of length l fixed at a position . At a certain instant bob is at its lowest position and is moving with speed u . Calculate the magnitude of change in velocity when string becomes horizontal for a moment .

A spere is suspended by a thread of length l. What minimum horizontal velocity has to be imparted to the ball for it to reach the height of the suspension?

JEE MAINS PREVIOUS YEAR-JEE MAIN 2022-Question
  1. A particle is released from height of 4.9m above surface of water. The...

    Text Solution

    |

  2. A point charge q = 2C is projected with velocity vec(v) = 2 hati + 3h...

    Text Solution

    |

  3. A bob P is suspended by the means of thread from point Q. Length of th...

    Text Solution

    |

  4. Four point masses each of mass m are placed at corners of square of si...

    Text Solution

    |

  5. Three charged particles having charge q each are suspended by means of...

    Text Solution

    |

  6. Which of the following expression does not have dimension [ M^0 L^0 T^...

    Text Solution

    |

  7. Which of the following statement is true about kinetic theory of gases...

    Text Solution

    |

  8. Which graph is correct for an ideal gas between pressure and density.

    Text Solution

    |

  9. Dimension of pascal x sec will be

    Text Solution

    |

  10. Acceleration of 12kg as shown in figure

    Text Solution

    |

  11. For what value of m equivalent resistance of given circuit is minimum

    Text Solution

    |

  12. Low frequency signal cannot be transmitted to large distance. Identify...

    Text Solution

    |

  13. For the following gate the output Y is given by

    Text Solution

    |

  14. In the shown diagram if tension in string is x/5 Mg. Find x

    Text Solution

    |

  15. Resolving power of a telescope for the aperture 24.4cm for the wavelen...

    Text Solution

    |

  16. Calculate maximum wavelength for which just electron ejected where wor...

    Text Solution

    |

  17. Match the following

    Text Solution

    |

  18. Relation between time period of two satelites is TA = 2TB then RA/RB i...

    Text Solution

    |

  19. Water drop 2cm diameter get divided into 64 droplets where surface ten...

    Text Solution

    |

  20. Match the following

    Text Solution

    |