Home
Class 11
PHYSICS
A solid sphere rolling on a rough horizo...

A solid sphere rolling on a rough horizontal surface. Acceleration of contact point is zero.
A solid sphere can roll on the smooth surface.

A

If both assertion and reason are true and reason is the true explanation of assertion.

B

If both assertion and reason are reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
(b) During rolling motion, there is radial acceleration towards the centre.
A solid sphere can roll on smooth surface hence reason is false.
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL DYNAMICS

    A2Z|Exercise Chapter Test|29 Videos

  • ROTATIONAL DYNAMICS

    A2Z|Exercise NEET Questions|59 Videos

  • PROPERTIES OF MATTER

    A2Z|Exercise Chapter Test|29 Videos

  • THERMAL PROPERTIES OF MATTER

    A2Z|Exercise Chapter Test|30 Videos

Similar Questions

Explore conceptually related problems

A solid sphere rolling on a rough horizontal surface with a linear speed v collides elastically with a fixed, smooth, vertical wall. Find the speed of the sphere after it has started pure rolling in the backward direction.

A solid sphere is rolling purely on a rough horizontal surface (coefficient of kinetic friction =mu ) with speed of centre =u . It collides inelastically with a smoothh vertical wall at a certain moment, the coefficient of restituting being (1)/(2) . The sphere will begin pure rolling after a time.

A solid sphere is rolled on a rough surface and it is found that sphere stops after some time.

A sphere of radius R is rolling on a rough horizontal surface. The magnitude of velocity of A with respect to ground will be

Assertion : A solid sphere cannot roll without slipping on smooth horizontal surface Reason : If the sphere is left free on smooth inclined surface. It cannot roll without slipping.

A disc is rolling on a rough horizontal surface. The instantaneous speed of the point of contact during perfect rolling is zero with respect to ground. The force of friction can help in achieving pure rolling condition.

A sphere rolling on a rough horizontal surface with constant velocity then it start going up on a smooth inclined plane. Rotational KE of sphere decreases continuosly on horizontal and inclined surface. Rotational KE decreases if torque due to friction opposes angular velocity of sphere.

A 1 kg solid sphere rolls without slipping on a rough horizontal surface under the influence of a 7 N force. The force acts tangentially at the highest point of the sphere. Which of the following statements are correct? ( 7 N force acts towards right).

A2Z-ROTATIONAL DYNAMICS-AIIMS Questions
  1. In the figure shown, a cylinder A is initially rolling with velocity v...

    Text Solution

    |

  2. A ball of mass m falls vertically to the ground from a height h1 and r...

    Text Solution

    |

  3. A solid iron sphere A rolls down an inclined plane. While an identical...

    Text Solution

    |

  4. A particle of mass 0.1 kg is subjected to a force which varies with di...

    Text Solution

    |

  5. A ball of mass m and radius r rolls inside a fixed hemispherical shell...

    Text Solution

    |

  6. A particle moves in a circular path with decreasing speed . Choose the...

    Text Solution

    |

  7. A solid disc rolls clockwise without slipping over a horizontal path w...

    Text Solution

    |

  8. A wheel which initiallty at rest starts rotating at time t = 0. The an...

    Text Solution

    |

  9. What will be the position of centre of mass of a half disc shown ? .

    Text Solution

    |

  10. Assertion: In an elasticcollision of two billard balls, the total KE i...

    Text Solution

    |

  11. The earth is slowing down and as a result the moon is coming nearer to...

    Text Solution

    |

  12. There are very small sporadic changes in the speed of rotation of the ...

    Text Solution

    |

  13. For of particles under central forcer field, the total angular momentu...

    Text Solution

    |

  14. A judo fighter in order to throw his opponent on the mat tries to ini...

    Text Solution

    |

  15. Assertion: A quick collision between two bodies is more violent that s...

    Text Solution

    |

  16. Assertion: In an elastic collision of two bodies , the momentum and en...

    Text Solution

    |

  17. Assertion: The velocity of a body at the bottom of an inclind plane of...

    Text Solution

    |

  18. Assertion: The velocity of a body at the bottom of an inclind plane of...

    Text Solution

    |

  19. A solid sphere rolling on a rough horizontal surface. Acceleration of ...

    Text Solution

    |

  20. Torque on a body can be zero even if there is a net force on it. Tor...

    Text Solution

    |