Home
Class 11
PHYSICS
A thin horizontal circular disc is rotat...

A thin horizontal circular disc is rotating about a vertical axis passing through its centre. An insect is at rest at a point near the rim of the disc. The insect now moves along the diameter of the disc to reach its other end. During the journey of the insect.
The angular speed of the disc:

A

remains unchanged

B

continuously decreases

C

continuously increases

D

first increased

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWER (VERY SHORT ANSWER QUESTIONS)|24 Videos

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWER (SHORT ANSWER QUESTIONS)|38 Videos

  • MOTION OF SYSTEM OF PARTICLES AND BODIES

    PREMIERS PUBLISHERS|Exercise TEXTBOOK QUESTIONS & ANSWERS (NUMERICAL PROBLEMS)|12 Videos

  • LAW OF MOTION

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (VI Numerical Problems)|62 Videos

  • NATURE OF PHYSICAL WORLD AND MEASUREMENT

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS (III. Short Answer Questions.)|24 Videos

Similar Questions

Explore conceptually related problems

Moment of inertia of a thin uniform rod rotating about the perpendicular axis passing through its centre is I. If the same rod is bent into a ring and its moment of inertia about its diameter is I', then the ratio I//I' is,

A rod of mass m and length L , lying horizontally is free to rotate about a vertical axis through its centre. A horizontal force of constant magnitude F acts on the rod at a distance of L/4 from the centre. The force is always perpendicular to the rod. Find the angle rotated by the rod during the time t after the motion starts.

Moment of inertia of a thin uniform disc about an axis passing through the center lying on the plane (along diameter is)

Two small bals A and B, each of mass m, are joined rigidlyl by a light horizontal rol of lengh L. The rod is clasmped at the centre in such a way that it c an rotate freely about a verticl axis through its centre. The systemis rotated with an angualr speed omega about the axis. A particle P of masss m kept at rest sticks to the ball A as the ball collides with it. Find the new angular speed of the rod.

A disc of radius 10 cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of a. a point on the rim, b. the middle point of the radius.

shows a conducting disc rotating about its axis in a perpendicular magnetic field B. A resistor of resistance R is connected between the centre and the rim. Calculate the current in the resistor. Does it enter the disc or leave it at the centre? The radius of hte disc is 5.0 cm , angular speed omega = 10 rad/s, B = 0.40 T and R = 10 Omega .

A thin uniform rod length 1 and mass m is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is omega . Its centre of mass rises to maximum height of ……

A bar magnet of magnetic moment 2.0 A m^2 is free to rotate about a vertical axis through its centre. The magnet is released from rest from the east-west position. Find the kinetic energy of the magnet as it takes the north-south position. The horizontal component of the earth's magnetic field is B = 25 muT .

A dumb bell consists of two identicasl small balls offmss 1/2 kg each connected to the ends of a 50 cm long light rod. The dumb bell is rotating about a fixed axis through the centre of the rod and perpendicular to it t an angular speed of 10 rad/s. An impulsive force of average magnitude 5.0 N acts on one of the masses in the direction of its velocity for 0.10s. Find the new angular velocity of the system.

PREMIERS PUBLISHERS-MOTION OF SYSTEM OF PARTICLES AND BODIES-OTHER IMPORTANT QUESTIONS & ANSWER (MULTIPLE CHOICE QUESTIONS)
  1. A body is projected from the ground with some angle to the horizontal....

    Text Solution

    |

  2. A body cannot roll without slipping on a

    Text Solution

    |

  3. Select the correct statement from the following .

    Text Solution

    |

  4. A cylinder rolls up an inclined plane, reaches some height, and then ...

    Text Solution

    |

  5. A solid sphere of mass m and radius r is released from rest at the top...

    Text Solution

    |

  6. A thin horizontal circular disc is rotating about a vertical axis pass...

    Text Solution

    |

  7. Planetary motion in the solar system is based on

    Text Solution

    |

  8. As disc is rotating with angular speed omega. If a child sits on it, w...

    Text Solution

    |

  9. If a sphere is rolling, the ratio of translational energy to total kin...

    Text Solution

    |

  10. For a hollow cylinder and a solid cylinder rolling without slipping on...

    Text Solution

    |

  11. In the following question, statement 1 refers assertion and statement ...

    Text Solution

    |

  12. A solid sphere, disc solid cylinder all of the same mass and made of t...

    Text Solution

    |

  13. A drum of radius R and mass M, rolls down without slipping along an in...

    Text Solution

    |

  14. A disc is rolling the velocity of its centre of mass is V(CM). Which o...

    Text Solution

    |

  15. In pure rolling, the velocity at the point of contact:

    Text Solution

    |

  16. If a body moves through a distance greater than 2πR in one full rotati...

    Text Solution

    |

  17. Select the incorrect statement from the following

    Text Solution

    |

  18. Select odd man out (incorrect) from the following expressions for kin...

    Text Solution

    |

  19. For a hollow cylinder and a solid cylinder rolling without slipping on...

    Text Solution

    |

  20. A body is rolling down in inclined plane. Its translational and rotati...

    Text Solution

    |