Home
Class 11
PHYSICS
A pencil is placed vertically on a table...

A pencil is placed vertically on a table top with its point end up and its sticky eraser end down As it falls over from this unstable. Position. Its point of contact with the tangential acceleration of its tip.

A

decreasing continuously

B

.exceeds g at some instant

C

becomes g just before hitting the table

D

IS constant

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Numerical MCQs Single Option Corrrect|39 Videos

  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise paragraph|24 Videos

  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|30 Videos

  • NEWTONS LAWS OF MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problem|81 Videos

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise unsolved|1 Videos

Similar Questions

Explore conceptually related problems

A tall, cylindrical chimney falls over when its base is ruptured. Treat the chimney as a thin rod of length 55.0 m. At the instant it makes an angle of 35.0^(@) with the vertical as it falls, what are (a) the radial acceleration of the top, and (b) the tangential acceleration of the top. ( c) At what angle theta is the tangential acceleration equal to g?

A ball thrown up, what its velocity and acceleration at the top?

A very long magnet is held vertically with its south pole on a table. A single neutral point is located on the table to the

A rod of length l is siding such that one of its ends is always in contact with a vertical wall and its other end is always in contact with horizontal surface. Just after the rod is relased from rest, the magnitude of acceleration of end points of the rod is and b respectively. The angular acceleration of road at this istant will be

A chain is lying on a rough table with a fraction 1/n of its length hanging down from the edge of the table. if it is just on the point of sliding down from the table, then the coefficient of friction between the table and the chain is -

A metre scale is standing vertically on a horizontal table on one of its end. It now falls on the table without slipping. The velocity with which the free end of the metre scale strikes the table is ["Given "I=(mL^(2))/(3)]

A long thin rod of length 2L rotates with a constant angular acceleration of 10rad//s^(2) about an axis that is perpendicular to the rod and passes through its center. What is the ratio of the tangential acceleration of a point on the end of the rod to that of a point a distance L/2 from the end of the rod?

' Prove that the mid-point of the hypotenuse of a right triangle is equidistant from its vertices.

A point starts from rest and moves along a circular path with a constant tangential acceleration. After one rotation, the ratio of its radial acceleration to its tangential acceleration will be equal to

PHYSICS GALAXY - ASHISH ARORA-RIGID BODIES AND ROTATIONAL MOTION-Conceptual MCQs Single Option Correct
  1. The locus of all the points on theX- Y plane, about which the moment o...

    Text Solution

    |

  2. A particle moves with a constant velocity parallel to the X-axis. Its ...

    Text Solution

    |

  3. A body is rotating uniformly about a vertical axis fixed in an inertia...

    Text Solution

    |

  4. Two uniform solid spheres having unequal rdii are released from rest f...

    Text Solution

    |

  5. A sphere can roll without slipping on a surface inclined at an angle t...

    Text Solution

    |

  6. A boiled egg and a raw egg of same mass and size are made to rotate ab...

    Text Solution

    |

  7. The angular velocity of the engine (and hence of the wheel) on a scoot...

    Text Solution

    |

  8. Only under gravity and some initial impulsea sphere cannot roll withou...

    Text Solution

    |

  9. A closed cylindrica tube containing some water (not filling the entire...

    Text Solution

    |

  10. Let I(A) and I(B) be moments of inertia of a body about two axes A and...

    Text Solution

    |

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

    Text Solution

    |

  12. A triangular plate of uniform thickness and density is made to rotate ...

    Text Solution

    |

  13. A satellite is revolving round the earth. If the universal gravitation...

    Text Solution

    |

  14. A body si rolling without slipping on a horizontal plane. If the rotat...

    Text Solution

    |

  15. A person is sitting near the edge fo a rotating platfrom when he walks...

    Text Solution

    |

  16. A pencil is placed vertically on a table top with its point end up and...

    Text Solution

    |

  17. A disc of radius R is spum to an angular speed omega about its axis an...

    Text Solution

    |

  18. A rod of mass M and length l is placed on a smooth horizontal table an...

    Text Solution

    |

  19. A block of mass m is held fixed against a wall by a applying a horizon...

    Text Solution

    |

  20. If net external torque, about a point, acting on the system is zero, t...

    Text Solution

    |