Home
Class 11
PHYSICS
If polar ice caps melt, then the time du...

If polar ice caps melt, then the time duration of one day

Text Solution

Verified by Experts

Earth rotates about its polar axis. When ice of polar caps of earth melts, mass concentrated near the axis of rotation spreads out. Therefore,
As no external torque axts,
`:. L = I omega = I ((2pi)/(T)) =` constant.
With increase of `I, T` will increase i.e., lenght of the day will increase.
Promotional Banner

Topper's Solved these Questions

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise CONCEPTUAL PROBLEMS II.|2 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise VERY SHORT ANSWER QUESTIONS I.|2 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    PRADEEP|Exercise CONCEPTUAL PROBLEMS I.|2 Videos

  • RAY OPTICS

    PRADEEP|Exercise Problem For Practice(a)|25 Videos

  • THERMODYNAMICS

    PRADEEP|Exercise Assertion- Reason Type Questions|19 Videos

Similar Questions

Explore conceptually related problems

If the polar ice caps melt suddenly

If earth shrinks then the duration of day

If the radius of the earth shrinks by "25%" without change in its mass,the time duration of one day will be "

If the mass of the earth is kept constant and its radius is made half, then the duration of the day will be where T is the present duration of the day.

Statement-1 : When ice on polar caps of earth melts, duration of the day increases. Statement-2 : L = I omega = I ((2pi)/(T)) = constant .

Assertion (A) : Contries like Netherlands, Bangladesh and Maldives face danget of getting submerged. Reason (R) : Due to global warming, polar ice caps melt, increasing the level of sea water.

When ice melts, its

If the earth loses its atmosphere sudenly, then the duration of day will :-

Explain with reason that if ice melts at polar region then moment of inertiaof earth increaes, angular velocity omega decreases and the duration of the day becomes longer.

If the earth shrinks such that its density becomes 8 times to the present values, then new duration of the day in hours will be

PRADEEP-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-CONCEPTUAL PROBLEMS
  1. Two satellites of equal masses, which can be considered as particles a...

    Text Solution

    |

  2. How will you distinguish between a hard boiled egg and a raw egg by s...

    Text Solution

    |

  3. If earth were to shrink suddenly, what would happen to the length of t...

    Text Solution

    |

  4. If two circular disks of the weight and thickness are made from metals...

    Text Solution

    |

  5. The moments of inertia of two rotating bodies A and B are I(A) and I(B...

    Text Solution

    |

  6. If polar ice caps melt, then the time duration of one day

    Text Solution

    |

  7. If no external torque acts on a body, will its angular velocity remain...

    Text Solution

    |

  8. How does an ice-skater, a ballet dancer or an acrobat take advantage o...

    Text Solution

    |

  9. Explain why the speed of a whirl wind in a tornado is alarmingly high ...

    Text Solution

    |

  10. Explain how is a cat able to land on its feet after a fall taking adva...

    Text Solution

    |

  11. If angular momentum is conserved in a system whose moment of inertia i...

    Text Solution

    |

  12. When there is no external torque acting on a rotating body, which of t...

    Text Solution

    |

  13. Equal torques are applied on a cylinder and a hollow sphere. Both have...

    Text Solution

    |

  14. A soild sphere is made to roll down from the same height on two inclin...

    Text Solution

    |

  15. A thin wheel can stay upright on its rim for a considerable length of ...

    Text Solution

    |

  16. Two identical cylinders 'runa race' starting from rest at the top of a...

    Text Solution

    |

  17. A one kg rolling on a smooth horizontal surface at 20 m s^(-1) comes t...

    Text Solution

    |

  18. A very small particle rests on the top of a hemisphere of radius 20 cm...

    Text Solution

    |

  19. The angular velocity of earth around the sun increases when it comes c...

    Text Solution

    |

  20. A particle performing uniform circular motion gas angular momentum L. ...

    Text Solution

    |