Home
Class 11
PHYSICS
A cubical block of side a is moving with...

A cubical block of side a is moving with velocity V on a horizontal smooth plane as shown in Figure. It hits a ridge at point O. The angular speed of the block after it hits O is

A

`(3v)/(4a)`

B

`(3v)/(2a)`

C

`sqrt(3/2)a`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
A
Conserving angular momentum about `O` (just before and just after ) is
`mva/2=[(ma^(2))/6 (ma^(2))/2]omegaimplies omega=(3v)/(4a)`
Promotional Banner

Topper's Solved these Questions

  • RIGID BODY DYNAMICS 2

    CENGAGE PHYSICS|Exercise Multiple Correct|26 Videos

  • RIGID BODY DYNAMICS 2

    CENGAGE PHYSICS|Exercise Linked Comprehension|71 Videos

  • RIGID BODY DYNAMICS 2

    CENGAGE PHYSICS|Exercise Subjective|19 Videos

  • RIGID BODY DYNAMICS 1

    CENGAGE PHYSICS|Exercise Integer|11 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS|Exercise Integer|16 Videos

Similar Questions

Explore conceptually related problems

A cubical block of side a is moving with velocity V on a horizontal smooth plane as shown in Figure. It hits a ridge at point O. The angular speed fo the block after it hits O is

A cubical block of side a is moving with velocity v on a horizontal smooth plane as shown. It hits a ridge at point O. The angular speed of the block after it hits O is:

A cubical block of side a is moving with velocity v on a horizontal smooth palne as shown . It hits a ridge at point O. The angular sped of the block after it hits O is

A particle is moving with constant speed v in xy plane as shown in figure. The magnitude of its angular velocity about point O is

A block of mass m is placed on an inclined plane which is moving with constant velocity v in horizontal direction as shown in figure. Then find out work done by the friction in time t if the block is at rest with respect to the incline plane.

A block of mass m is moving in a circle of radius R with speed v inside a smooth cone as shown in figure. Choose the wrong options

A ball of mass moving with constant velocity u collides with a smooth horizontal surface at O as shown in Fig. Neglect gravity and friction. The y -axis is drawn normal to the horizontal surface at the point of impact O and x -axis is horizontal as shown. About which point will the angular momentum of ball be conserved?

A block is dragged on a smooth plane with the help of a rope which moves with a velocity v as shown in figure. The horizontal velocity of the block is :

CENGAGE PHYSICS-RIGID BODY DYNAMICS 2-Single Correct
  1. A small object of uniform density rolls up a curved surface with an in...

    Text Solution

    |

  2. A cylinder of mass M and radius R is resting on a horizontal platform ...

    Text Solution

    |

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

    Text Solution

    |

  4. A solid cylinder is placed on the end of an inclined plane. It is foun...

    Text Solution

    |

  5. A uniform box of height 2 m and having a square base of side 1 m, weig...

    Text Solution

    |

  6. A disc of radius 0.2 m is rolling with slipping on a flat horizontal s...

    Text Solution

    |

  7. A slender rod of mass M and length L rests on a horizontal frictionles...

    Text Solution

    |

  8. Two identical small balls, each of mass m, are connected by a massless...

    Text Solution

    |

  9. A ball is given a velocity v and angular velocity such that the ball r...

    Text Solution

    |

  10. A thick walled hollow sphere has outer radius R. It down an inclined p...

    Text Solution

    |

  11. A uniform disk turns at 2.4 rev//s around a frictionless axis. A nonro...

    Text Solution

    |

  12. A rolling object rolls without slipping down an inclined plane (angle ...

    Text Solution

    |

  13. Suppose you are standing on the edge of a spinning platform and step o...

    Text Solution

    |

  14. Figure shows a thin metallic triangular sheet ABC. The mass of the she...

    Text Solution

    |

  15. A sphere of mass M and radius R is moving on a rough fixed surface, ha...

    Text Solution

    |

  16. A uniform solid sphere rolls up (witout slipping) the fixed inclined p...

    Text Solution

    |

  17. A conical pendulum consists of a simple pendulum moving in a horizonta...

    Text Solution

    |

  18. A child with mass m is standing at the edge of a merry go round having...

    Text Solution

    |

  19. Two identical uniform solid spherical balls A and B of mass m each are...

    Text Solution

    |

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

    Text Solution

    |