Home
Class 11
PHYSICS
A child is swinging a swing. Minimum and...

A child is swinging a swing. Minimum and maximum heights fo swing from the earth's surface are 0.75 m and 2 m respectively. The maximum velocity of this swing is

A

`5ms^(-1)`

B

`10ms^(-1)`

C

`15ms^(-1)`

D

`20ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`v=sqrt(2gh)=sqrt(2g(h_(max)-h_(min)))=sqrt(2xx10xx1.25)=5ms^(-1)`
Promotional Banner

Topper's Solved these Questions

  • CIRCULAR MOTION

    DC PANDEY|Exercise Taking it together|67 Videos

  • CIRCULAR MOTION

    DC PANDEY|Exercise Match the columns|3 Videos

  • CIRCULAR MOTION

    DC PANDEY|Exercise Integer|7 Videos

  • CENTRE OF MASS, LINEAR MOMENTUM AND COLLISION

    DC PANDEY|Exercise Level 2 Subjective|21 Videos

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Only One Option is Correct|27 Videos

Similar Questions

Explore conceptually related problems

The height of a swing changes during its motion from 0.1 m to 2.5 m . The minimum velocity of a boy who swings in this swing is

A swinging pendulum has its maximum acceleration at

A body swinging on a swing is 1 metre above the ground at the lowest point. He is 2m above the ground at the highest postiion. What is the velocity at the lowest point of the swing?

A 4 kg balls is swing in a vertical circle at the end of a cord 1 m long. The maximum speed at which it can swing if the cord can sustain maximum tension of 163.6 N will be

A boy sitting on a swing which is moving to an angle of 30^(@) from the vertical is blowing a whistle which is of frequency 1000Hz . The whistle is 2m from the point of support of the swing. If a girl stands in front of the swing, the maximum and minimum frequencies she will hear are (velocity of sound =330m//s , g=9.8m//s^(2) )

DC PANDEY-CIRCULAR MOTION-Check point
  1. A string of length 0.1 m cannot bear a tension more than 100 N. It is ...

    Text Solution

    |

  2. A mass 2 kg is whirled in a horizontal circle by means of a string at ...

    Text Solution

    |

  3. A mass of 100 gm is tied to one end of a string 2 m long. The body is ...

    Text Solution

    |

  4. A car is taking turn on a circular path of radius R. If the coefficien...

    Text Solution

    |

  5. A car is moving in a circular horizontal track of radius 10 m with a c...

    Text Solution

    |

  6. The radius of the curved road on a national highway is R. The width of...

    Text Solution

    |

  7. A motor cyclist moving with a velocity of 72 km/hour on a flat road ta...

    Text Solution

    |

  8. A car of mass 1000kg negotiates a banked curve of radius 90m on a fict...

    Text Solution

    |

  9. Keeping the angle of banking, if the radius of curvature is made four ...

    Text Solution

    |

  10. A person wants to drive on the vertical surface of a large cylindrical...

    Text Solution

    |

  11. A motercyclist wants to drive on the vertical surface of wooden 'well'...

    Text Solution

    |

  12. A block of mass m at the end of a string is whirled round in a vertica...

    Text Solution

    |

  13. A stone of mass of 1 kg is tied to the end of a string 1 m long. It is...

    Text Solution

    |

  14. A stone is attached to one end of a string and rotated in verticle cri...

    Text Solution

    |

  15. A particle is moving in a vertical circle with constant speed. The ten...

    Text Solution

    |

  16. A particle of mass m is being circulated on a vertical circle of radiu...

    Text Solution

    |

  17. A small sphere of mass m is supended by a thread of length l. It is ra...

    Text Solution

    |

  18. A child is swinging a swing. Minimum and maximum heights fo swing from...

    Text Solution

    |

  19. A national roadway bridge over a canal is in the form of an arc of a ...

    Text Solution

    |

  20. A frictionless track ABCDE ends in a circular loop of radius R. A body...

    Text Solution

    |