Home
Class 11
PHYSICS
A round disc of moment of inertia I2 abo...

A round disc of moment of inertia `I_2` about its axis perpendicular to its plane and passing through its centre is placed over another disc of moment of inertia `I_1` rotating with an angular velocity `omega` about the same axis. The final angular velocity of the combination of discs is.

A

`(I_(2)omega)/(I_(1)+I_(2))`

B

`omega`

C

`(I_(1)omega)/(I_(1)+I_(2))`

D

`((I_(1)+I_(2))omega)/(I_(1))`

Text Solution

Verified by Experts

`I_(1)omega=(I_(1)+I_(2))omega'implies omega'=(I_(1)omega)/(I_(1)+I_(2))`
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    CP SINGH|Exercise Exercise|172 Videos

  • RELATIVE MOTION

    CP SINGH|Exercise EXERCISE|33 Videos

  • SIMPLE HARMONIC MOTION

    CP SINGH|Exercise Exercises|125 Videos

Similar Questions

Explore conceptually related problems

Radius of gyration of disc rotating about an axis perpendicular to its plane passing through through its centre is (If R is the radius of disc)

Find the moment of inertia of a uniform half-disc about an axis perpendicular to the plane and passing through its centre of mass. Mass of this disc is M and radius is R.

A heavy disc is rotating with uniform angular velocity omega about its own axis. A piece of wax sticks to it. The angular velocity of the disc will

The moment of inertia of a copper disc, rotating about an axis passing through its centre and perpendicular to its plane

The moment of inertia of a circular disc about an axis passing through its centre and perpendicular to the plane is 4 kg m^(2) . Its moment of inertia about the diameter is

The moment of inertia of a circular disc about an axis passing through the circumstances perpendicular to the plane of the disc is

Calculate the moment of inertia of a disc of radius R and mass M, about an axis passing through its centre and perpendicular to the plane.

The moment of inertia of a circular disc about an axis passing through its centre and normal to its plane is "50 kg - m"^(2) . Then its moment of inertia about a diameter is

A charge Q is uniformly distributed over the surface of non - conducting disc of radius R . The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular to its plane and passing through its centre of the disc. If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc then the variation of the magnetic induction at the centre of the disc will br represented by the figure:

State the expression for the moment of inertia of a thin uniform disc about an axis perpendicular to its plane and through its centre. Hence deduce the expression for its moment of inertia about a tangential axis perpendicular to its plane.

CP SINGH-ROTATIONAL MOTION-Exercise
  1. A uniform horizontal circular platform of mass 200 kg is rotating at ...

    Text Solution

    |

  2. A thin uniform circular disc of mass M and radius R is rotating in a h...

    Text Solution

    |

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

    Text Solution

    |

  4. Two discs of moment of inertia I(1) and I(2) and angular speeds omega(...

    Text Solution

    |

  5. A circular disc of moment of inertia I(t) is rotating in a horizontal...

    Text Solution

    |

  6. A child is standing with folded hands at the center of a platform rota...

    Text Solution

    |

  7. A cockroach is moving with velocity v in anticlockwise direction on th...

    Text Solution

    |

  8. A thin horizontal circular disc is roating about a vertical axis passi...

    Text Solution

    |

  9. A circular plarform is free to rotate in a horizontal plane about a ve...

    Text Solution

    |

  10. A man standing on a platform holds weights in his outstretched arms. T...

    Text Solution

    |

  11. A small mass attached to a string rotates on a frictionless table top ...

    Text Solution

    |

  12. A stone of mass m tied to the end of a string, is whirled around in a ...

    Text Solution

    |

  13. A cubical block of side a is moving with velocity V on a horizontal sm...

    Text Solution

    |

  14. A playground merry-go-round is at rest, pivoted about a frictionless a...

    Text Solution

    |

  15. A small ball strikes a stationery uniform rod, which is free to rotate...

    Text Solution

    |

  16. Consider a body, shown in figure, consisting of two identical balls, e...

    Text Solution

    |

  17. A uniform bar of length 6a and mass 8m lies on a smooth horizontal tab...

    Text Solution

    |

  18. A small mass m is attached to a massless string whose other end is fi...

    Text Solution

    |

  19. A constant torque acting on a uniform circular wheel changes its anglu...

    Text Solution

    |

  20. A thin rod of mass m and length 2L is made to rotate about an axis pas...

    Text Solution

    |