Home
Class 12
PHYSICS
Assertion: A disc rolls without slipping...

Assertion: A disc rolls without slipping on a horizontal surface and the linear speed of its centre of mass is v. The rotational speed of the particles on its rim at the top of the disc will be 2v.
Reason: The disc rolls as if it is rotating about the point of contact with the horizontal surface.

A

Assertion is True, Reason is True, Reason is a correct explanation for Assertion

B

Assertion is True, Reason is True, Reason is not a correct explanation for Assertion

C

Assertion is False but, Reason is True.

D

Assertion is True, Reason is False

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2019

    TARGET PUBLICATION|Exercise MCQ|45 Videos

  • SEMICONDUCTORS

    TARGET PUBLICATION|Exercise Evaluation Test|17 Videos

Similar Questions

Explore conceptually related problems

A wheel rolls without slipping on a horizontal surface such that its velocity of center of mass is v . The velocity of a particle at the highest point of the rim is

A disc rolls without slipping on a horizontal surface such that its velocity of center of the mass is v . Find the velocity of points A , B , C and D .

A symmetrical body of mass M and radius R is rolling without slipping on a horizontal surface with linear speed v. Then its angular speed is

A disc is rolling without sliding on a horizontal surface. Velocity of the centre of the disc is V . Then the maximum relative sped of any point on the circumference of the disc with respect to point P is.

A circular disc of radius r is rolling without slipping on a horizontal surface. What is the ratio of the translational KE and rotational KE of disc ?

A disc of mass 100 g is rolling without slipping on a horizontal surface with a velocity of 10 cm s^(-1) . Calculate its total energy.

A disc of radius 0.2 m is rolling with slipping on a flat horizontal surface, as shown in Fig. The instantaneous centre of rotation is (the lowest contact point is O and centre of disc is C )

A ring and a disc of same mass roll without slipping along a horizontal surface with same velocity. If the K.E. of ring is 8J , then that of disc is

A disc rolls over a horizontal floor without slipping with a linear speed of 5 cm/sec. Then the linear speed of a particle on its rim, with respect to the floor, when it is in its highest position is?

A uniform ring rolls on a horizontal surface with out slipping. Its centre of mass moves with a constant speed v. then speed of the upper most point on its rim above the ground is

TARGET PUBLICATION-ROTATIONAL MOTION -MCQ
  1. The moment of inertia of a body about a given axis is 3.6" kg m"^(2). ...

    Text Solution

    |

  2. Three bodies, a ring, a soild cylinder and a soild sphere roll down th...

    Text Solution

    |

  3. Assertion: A disc rolls without slipping on a horizontal surface and t...

    Text Solution

    |

  4. The diameter of a flywheel is increased by 1% keeping the mass same. I...

    Text Solution

    |

  5. Moment of inertia of the earth about an axis passing through its centr...

    Text Solution

    |

  6. A rigid body is made of three identical thin rods, each of length L fa...

    Text Solution

    |

  7. Of the two eggs which have identical sizes, shapes and weights, one is...

    Text Solution

    |

  8. The moment of inertia of a thin uniform ring of mass I kg about an axi...

    Text Solution

    |

  9. The moment of inertia of the body about an axis is 1.2 kg m^(2). Initi...

    Text Solution

    |

  10. The angular velocity of a body rotating about a given axis is doubled....

    Text Solution

    |

  11. A uniform thin rod of length l is suspended from one of its ends and i...

    Text Solution

    |

  12. A particle of mass m is describing a circular path of radius r with un...

    Text Solution

    |

  13. A flywheel of mass 10 kg and radius 10 cm is revolving at a speed of 2...

    Text Solution

    |

  14. The angular speed of a body changes from omega1 to omega2 without app...

    Text Solution

    |

  15. Radius of gyration of a uniform solid sphere about its diamter is

    Text Solution

    |

  16. Find the radius of gyration of a rod of mass 100 g and length 100 cm a...

    Text Solution

    |

  17. Four particles each of mass (M) are held rigidly by a very light circu...

    Text Solution

    |

  18. Torque acting on a rotating body

    Text Solution

    |

  19. A stone of mass ied to a string of lengh l rotating along & a circular...

    Text Solution

    |

  20. A solid sphere of mass 2 kg and radius 5 cm is rotating at the rate of...

    Text Solution

    |