Home
Class 12
PHYSICS
A child swinging on a swing in sitting p...

A child swinging on a swing in sitting position stands up, then the time period of the swing will:

A

increase

B

decrease

C

remain same

D

increase if the child is long and decrease If the chile is short

Text Solution

Verified by Experts

The correct Answer is:
B
The time period of the swing is
`T = 2pisqrt((l_(eff))/(g))`
Where `l_(eff) ` is the distance from point of suspension to the centre of mass of child. As the child stands up, the `l_(eff)` decrease hence T decreases.
Promotional Banner

Topper's Solved these Questions

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Exercise-05 [B]|12 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise MCQ s one or more than one correct answers|5 Videos

  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Exercise-04 [B]|105 Videos

  • RACE

    ALLEN|Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|24 Videos

  • TEST PAPER

    ALLEN|Exercise PHYSICS|4 Videos

Similar Questions

Explore conceptually related problems

When a boy is playing on a swing in the sitting position , the time period of oscillations of the swing is T. If the boy stands up , the time period of oscillation of the spring will be

A boy is swinging in a swing. If he stands , the time period will

Assertion : When a girl sitting on a swing stands up, the periodic time of the swing will increase. Reason : In standing position of the girl, the length of swing will increase.

A ball of mass m is fastened to a string. The ball swings in a vertical circle of radius R with the other end of the string held fixed. Neglecting the air resistance, the difference between the string's tension at the bottom of the circle and at the quarter of the cirlce is

A boy sitting on a swing which is moving to an angle of 30^@ from the vertical is blowing a whistle which has a frequency of 100 Hz. The whistle is at 2.0 m from the point of support of the swing. A girl stands in front of the swing. The maximum frequency she will hear is nearly 10^x Hz (velocity of sound 330 m/s,g= 9.8 m//s^2 ). Find x

A 50 kg girl is swinging on a swing from rest. Then, the power delivered when moving with a velocity of 2ms^(-1) upwards in a direction making an angle 60^(@) with the vertical is

A girl is swinging in a swing with a constant angular amplitude 60^(@). Force constnat of the cushion on which she sits is K. Strings of swing are massless and extensible. Assuming highest point as Datum, match the entries in column I and II

A person of mass M is setting on a swing of length L and swinging with an angular amplitude theta_(0) if the person stands up when the swing passes through its lowest point, the work done by him, assuming that his centre of mass moves by a distance l(lt lt L)

A ball is held at rest in position A by two light cords. The horizontal cord is now cut and the ball swings to the position B. What is the ratio of the tension in the cord in position B to that in position A?

A small bucket of mass M is attached to a long inextensible cord of length L . The bucket is released from rest when the cord is in a horizontal position. In its lowest position the bucket scoops up m of water, what is the height of the swing above the lowest position?

ALLEN-SIMPLE HARMONIC MOTION-Exercise-05 [A]
  1. If a spring has time period T and is cut into n equal parts, then the ...

    Text Solution

    |

  2. In a simple harmonic oscillator, at the mean position,

    Text Solution

    |

  3. A child swinging on a swing in sitting position stands up, then the ti...

    Text Solution

    |

  4. A mass M is suspended from a spring of negligible mass. The spring is ...

    Text Solution

    |

  5. The displacement of a particle varies according to the relation x=4 (c...

    Text Solution

    |

  6. A body executes simple harmonic motion. The potential energy (PE) , th...

    Text Solution

    |

  7. Two particle A and B of equal masses are suspended from two massless s...

    Text Solution

    |

  8. A particle at the end of a spring executes SHM with a period t(1)Whi...

    Text Solution

    |

  9. The total energy of a particle executing SHM is (where X is the displa...

    Text Solution

    |

  10. A particle of mass (m) is attached to a spring (of spring constant k) ...

    Text Solution

    |

  11. A particle of mass 0.3 kg is subjected to a force F = kx with k = 15 N...

    Text Solution

    |

  12. The function sin^(2) (omegat) represents.

    Text Solution

    |

  13. Two SHMs are represented by the equations y1=0.1sin 100 pit+(pi//3)] a...

    Text Solution

    |

  14. If a simple harmonic motion is represented by (d^(2)x)/(dt^(2))+alphax...

    Text Solution

    |

  15. The bob of simple pendulum is a spherical hollow ball filled with wate...

    Text Solution

    |

  16. The maximum velocity of a particle, excuting simple harmonic motion wi...

    Text Solution

    |

  17. Starting from origin at , a body oscillates simple harmonically with a...

    Text Solution

    |

  18. The displacement of an object attached to a spring and executing simpl...

    Text Solution

    |

  19. A point mass oscillates along the x-axis according to the law x=x(0) c...

    Text Solution

    |

  20. If a simple pendulum has significant amplitude (up to a factor of 1/e ...

    Text Solution

    |