Home
Class 12
PHYSICS
A solid homogeneous sphere is moving on ...

A solid homogeneous sphere is moving on a rough horizontal surface, partly rolling and partly sliding. During the king of motion of the sphere.

A

Total kinetic energy is conserved

B

Angular momentum of sphere about the point of contact is conserved

C

Only the rotational kinetic energy about the centre of mass is conserved

D

Angular monentum about the centre of mass is conserved

Text Solution

Verified by Experts

The correct Answer is:
B
Since all the forces pass through point of contact only angular momentum remains constant
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A solid homogeneous sphere is moving on a rough horizontal surface, partily rolling and partly sliding. During this kind of motion of the sphere.

A solid homogeneous sphere of mass M and radius R is moving on a rough horizontal surface partly rolling and partly sliding. During this kind of motion of the sphere

A sphere is rolled on a rough horizontal surface. It gradually slows down and stops. The force of friction tries to

A sphere is rolled on a rough horizontal surface. It gradually slows down and finally stops. The force of friction tries to

A solid sphere of radius 2.45m is rotating with an angular speed of 10 rad//s . When this rotating sphere is placed on a rough horizontal surface then after sometime it starts pure rolling. Find the linear speed of the sphere after it starts pure rolling.

A sphere is rolling on a horizontal surface without slipping. The ratio of the rotational K.E. to the total kinetic energy of the sphere is

The motion of a sphere moving on a rough horizontal surface changes from pure sliding (without rolling) to pure rolling (without slipping). In this process, the force of friction ( i ) intially acts opposite to the direction of motion and late in the direction of motion ( ii ) cause linear retardation ( iii ) causes angular acceleration ( iv ) stops acting when pure rolling begins

A sphere is performing pure rolling on a rough horizontal surface with constant angular velocity. Frictional force acting on the sphere is zero. Velocity of contact point is zero.

A force F acts tangentially at the highest point of a sphere f mass m kept on a rough horizontal plane. If the sphere rolls without slipping, find the acceleration of the centre of the sphere.

ALLEN-TEST PAPERS-part-2 physic
  1. A container having two immiscible liquids of densities 'p' and '2p' mo...

    Text Solution

    |

  2. A non viscous liquid of constant density 10^(3) kg//m^(3) flows in st...

    Text Solution

    |

  3. A uniform thin rod is bent in the form of closed loop ABCDEFA as shown...

    Text Solution

    |

  4. Find force underset('F')(rarr) at 'B' required to keep the system in e...

    Text Solution

    |

  5. A solid homogeneous sphere is moving on a rough horizontal surface, pa...

    Text Solution

    |

  6. Two current carrying coil having radius 'r' are seperated by distance ...

    Text Solution

    |

  7. The magnetic field in a region is given by vec(B)=B(0)(1+(x)/(a))hat(k...

    Text Solution

    |

  8. In the circuit shown in Fig. Sliding contact is moving with uniform ve...

    Text Solution

    |

  9. A bulb of 100 W is connected in parallel to an ideal inductance of 1H....

    Text Solution

    |

  10. A ray of light is incident on the surface of a sphere of refractive in...

    Text Solution

    |

  11. A cylinder tank of base area A has a small hole of areal a at the bott...

    Text Solution

    |

  12. A ring of mass 'm' and radius 'r' carrying current i(0) is lying in t...

    Text Solution

    |

  13. In the circuit shown in figure power factor of box is 0.5 and power fa...

    Text Solution

    |

  14. A parabolic mirror is silvered at inner surface. The equation of the c...

    Text Solution

    |

  15. A heavy and a light cylindrical rollers of diameter D and d respectiv...

    Text Solution

    |

  16. Figure shows the graph of angle of deviation del versus angle of incid...

    Text Solution

    |

  17. A plank P is placed on a solid cylinder S, which rolls on a horizontal...

    Text Solution

    |

  18. An object to the left of a lens is imaged by the lens on a screen 30cm...

    Text Solution

    |

  19. A direct current of 2 A and an alternating current having a maximum va...

    Text Solution

    |

  20. The potential difference across a 4 H inductor vary with time is as sh...

    Text Solution

    |