Home
Class 11
PHYSICS
A circular platform is mounted on a vert...

A circular platform is mounted on a vertical frictionless axle. Its radius is `r=2m` and its moment of inertia is `I=200kg-m^(2)`. It is initially at rest. A `70kg` man stands on the edge at speed `v_(0)=1.0m//s` relative to the ground. The angular velocity of the platform is:

A

`1.2rad//s`

B

`0.4rad//s`

C

`2.0rad//s`

D

`0.7rad//s`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • RIGID BODY MOTION

    ANURAG MISHRA|Exercise MCQ_TYPE|41 Videos

  • RIGID BODY MOTION

    ANURAG MISHRA|Exercise COMPREHENSION_TYPE|29 Videos

  • RIGID BODY MOTION

    ANURAG MISHRA|Exercise MATCH THE COLUMN|12 Videos

  • IMPULSE AND MOMENTUM

    ANURAG MISHRA|Exercise matching|3 Videos

  • UNIT AND DIMENSIONS

    ANURAG MISHRA|Exercise Matching Type Problem|4 Videos

Similar Questions

Explore conceptually related problems

A circular platform is mounted on a vertical frictionless axle. Its radius is r = 2 m and its moment of inertia I = 200 kg m^2 . It is initially at rest. A 70 kg man stands on the edge of the platform and begins to walk along the edge at speed v_0 = 1 m s^-1 relative to the ground. The angular velocity of the platform is.

A circular platform is mounted on a frictionless vertical axle. Its radius R = 2m and its moment of inertia about the axle is 200 kg m^(2) . It is initially at rest. A 50 kg man stands on the edge at the platform and begins to walk along the edge at the speed of 1ms^(-1) relative to the ground. Time taken by the man to complete one revolution is :

Kinetic energy of a body is 4j and its moment of inertia is 2kg m^(2) , then angular momentum is

A man of mass 100 kg stands at the rim of a turtable of radius 2 m and moment of inertia 4000 kgm^(2) mounted on a vertical frictionless shaft at its centre. The whole system is initially at rest. The man now walks along the outer edge of the turntable with a velocity of 1m//s relative to the earth a. With what angular velocity and in what direction does the turntable rotate? b. Through what angle will it have rotated when the man reaches his initial position on the turntable? c. Through what angle will it have rotated when the man reaches his initial position relative to the earth?

The K.E. of a body is 3 joule and its moment of inertia is "6 kg m"^(2) . Then its angular momentum will be

The kinetic energy of a body ia 4 joule and its moment of inertia is 2" kg m"^(2) . Angular momentum is

A solid cylinder of mass 20kg has length 1 m and radius 0.2 m. Then its moment of inertia (in kg- m^(2) ) about its geometrical axis is :

A whell of mass 4 kg and radius of gyration 0.4 m is making 300 r.p.m. Its moment of inertia is

ANURAG MISHRA-RIGID BODY MOTION-SCQ_TYPE
  1. A uniform thin bar of mass 6 m and length 12 L is bend to make a regul...

    Text Solution

    |

  2. Two rings of same radius and mass are placed such that their centres a...

    Text Solution

    |

  3. In a rectangle ABCD, AB = 21 and BC = 1. Axes xx and yy pass through c...

    Text Solution

    |

  4. Moment of inertia I of a solid sphere about an axis parallel to a diam...

    Text Solution

    |

  5. A wire of length l and mass m is bent in the form of a rectangle ABCD ...

    Text Solution

    |

  6. A hoop rolls on a horizontal ground without slipping with linear speed...

    Text Solution

    |

  7. A rigid spherical body is spinning around an axis without any external...

    Text Solution

    |

  8. A solid sphere and a hollow sphere of equal mass and radius are placed...

    Text Solution

    |

  9. A circular platform is mounted on a vertical frictionless axle. Its ra...

    Text Solution

    |

  10. A ball of mass m and radius r rolls inside a hemispherical shell of ra...

    Text Solution

    |

  11. A disc of radius 0.1m rolls without sliding on a horizontal surface wi...

    Text Solution

    |

  12. A sphere is moving on a smooth surface with linear speed v(0) and angu...

    Text Solution

    |

  13. An inclined plane makes an angle of 60^(@) with horizontal. A disc rol...

    Text Solution

    |

  14. A force F is applied at the top of a ring of mass M and radius R place...

    Text Solution

    |

  15. In both the figures all other factors are same, except that in figure ...

    Text Solution

    |

  16. A billiard ball of mass m and radius r, when hit in a horizontal direc...

    Text Solution

    |

  17. A wheel of radius R rolls on the ground with a uniform velocity v. The...

    Text Solution

    |

  18. A plank with a uniform sphere placed on it resting on a smooth horizon...

    Text Solution

    |

  19. A rod of length l is given two velocities v(1) & v(2) in opposite dire...

    Text Solution

    |

  20. Two particle of equal mass m at A and B are connected by a rigid light...

    Text Solution

    |