Home
Class 11
PHYSICS
A diver in a swimming pool bends his hea...

A diver in a swimming pool bends his head before diving, because it

A

increases his linear velocity

B

decreases his angular velocity

C

increases his moment of inertia

D

decreases his moment of inertia

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • System of particles & rotational Motion

    SL ARORA|Exercise EXERCISE|353 Videos

  • ROTATIONAL MOTION

    SL ARORA|Exercise Problem for self practice|90 Videos

  • Thermal Properties of Matter

    SL ARORA|Exercise Exercise|449 Videos

Similar Questions

Explore conceptually related problems

A diver in a swimming poole wants to signal his distress to a person lying on the edge of the pool by flashing his water proof flash light

A novice scuba diver practicing in a swimming pool takes enough air from his tank to fully expand his lungs before abandoning the tank at depth l. and swimming to the surface , failing to exhale during his ascent . At the surface , the difference Delta p between the external pressure on him and the air pressure in his lungs is 9.3 kPa . From what depth does he start ? What potentially lethal danger does he face ?

A man standing in a swimming pool looks at a stone lying at the bottom. The depth of the swimming pool is h. At what distance from the surface of water is the image of the stone formed -

A man stnading in a swimming pool looks at a stone lying at the bottom. The depth of the swimming pool is h. At what distance from the surface of water is the image of the stone formed? (Line of vision is normal, Refractive index of water is n)

Suppose you are inside the water in a swimming pool near an edge. A friend is standing on the edge. Do you find your friend taller or shorter than his usual height ?

Ozone is spread in the swimming pool because:

Rashid has decided to build a swimming pool as shown in the figure on an empty plot 25 metres long and 15 metres wide. He is discussing with his son Majid about his plan to build the pool, put tiles on the bottom of the pool and other requirements of the pool. Can you help Majid to answer the following questions which his father has asked in the discussion? What is the surface area of the pool?

SL ARORA-System of particles & rotational Motion-EXERCISE
  1. The angular momentum of a system of particles is conserved

    Text Solution

    |

  2. The motion of planets in the solar system is an exmaple of the conserv...

    Text Solution

    |

  3. A diver in a swimming pool bends his head before diving, because it

    Text Solution

    |

  4. If a person standing on a rotating disc stretches out his hands, the a...

    Text Solution

    |

  5. A dancer is rotating on smooth horizontal floor with an angular moment...

    Text Solution

    |

  6. A round disc of moment of inertia I2 about its axis perpendicular to i...

    Text Solution

    |

  7. A uniform disc of mass M and radius R is rotating in a horizontal plan...

    Text Solution

    |

  8. A thin circular ring of mass m and radius R is rotating about its axis...

    Text Solution

    |

  9. A loop of mass M and radius R is rolling on a smooth horizontal surfac...

    Text Solution

    |

  10. A sphere of moment of inertia 'I' and mass 'm' rolls down on an inclin...

    Text Solution

    |

  11. A disc is rolling without slipping. The ratio of its rotational kineti...

    Text Solution

    |

  12. A solid sphere is rolling without slipping on a horizontal plane. The ...

    Text Solution

    |

  13. A disc is rolling on the inclined plane. What is the ratio of its rota...

    Text Solution

    |

  14. A disc of mass 4.8 kg and radius 1 m is rolling on a horizontal surfac...

    Text Solution

    |

  15. A liquid is kept in a cylindrical jar, which is rotated about the cyli...

    Text Solution

    |

  16. A sphere rolls down an inclined plane of inclination theta. What is th...

    Text Solution

    |

  17. An inclined plane makes an angle 30° with the horizontal. A solid sphe...

    Text Solution

    |

  18. The acceleration of a solid cylinder rolling down an smooth inclined p...

    Text Solution

    |

  19. A cylinder is rolling down on a inclined plane of inclination60^(@). W...

    Text Solution

    |

  20. A solid cylinder is rolling without slipping on a plane having inclina...

    Text Solution

    |