Home
Class 11
PHYSICS
A solid cylinder of mass 20 kg rotates a...

A solid cylinder of mass `20 kg` rotates about its axis with angular speed `100 s^(-1)`. The radius of the cylinder is `0.25 m`. What is the kinetic energy associated with the rotation of the cylinder ? What is the magnitude of angular momentum of the cylinder about its axis ?

Text Solution

Verified by Experts

Kinetic Energy = 3125 J, Angular Momentum = 62.5 J s
Promotional Banner

Topper's Solved these Questions

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    NCERT TAMIL|Exercise EXERCISES (TRUE OR FALSE)|5 Videos

  • SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

    NCERT TAMIL|Exercise EXERCISES (TRUE OR FALSE)|5 Videos

  • PROPERTIES OF MATTER

    NCERT TAMIL|Exercise EVALUATION (MULTIPLE CHOICE QUESTIONS)|14 Videos

  • THERMAL PROPERTIME OF MATTER

    NCERT TAMIL|Exercise EXERCISES|31 Videos

Similar Questions

Explore conceptually related problems

A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad/s. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder ? What is the magnitude of angular momentum of the cylinder about its axis ?

A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad/s. The radius of the cylinder is 0.25 m. Calculate the kinetic energy associated with the rotation of the cylinder.

A solid cylinder of mass 20kg rotates about it axis with anguler speed 100s^(-1) the radius of the cylinder is 0.25m, Calculate moment of intertia of the solid cylinder.

A solid cylinder of mass 3 kg and radius 10 cm is rotating about its axis with a frequency 20//pi . The rotational kinetic energy of the cylinder

consider a nonconducting ring of radius r and mass m which has a total charge q distributed uniformly on it the ring is rotated about its axis with an angular speed omega . (a) Find the equivalent electric current in the ring (b) find the magnetic moment mu of the . (c) show that mu=(q)/(2m) where l is the angular momentum of the ring about its axis of rotation.

A disc of radius 10 cm is rotating about its axis at an angular speed of 20 rad/s. Find the linear speed of a. a point on the rim, b. the middle point of the radius.

A solid cylinder of mass 2 kg and radius 4 cm is rotating about its axis at the rate of 3 rpm. The torque required to stop it after 2 pi revolutions is

NCERT TAMIL-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-EXERCISES
  1. (a) Find the moment of inertia of a sphere about a tangent to the sphe...

    Text Solution

    |

  2. Torques of equal magnitude are applied to hollow cylinder and a solid ...

    Text Solution

    |

  3. A solid cylinder of mass 20 kg rotates about its axis with angular spe...

    Text Solution

    |

  4. A child stands at the centre of a turn table with his two arms outstre...

    Text Solution

    |

  5. A rope of negligible mass is wound around a hollow cylinder of mass 3 ...

    Text Solution

    |

  6. To maintain a rotor at a uniform angular speed of 100 rads^(-1) an eng...

    Text Solution

    |

  7. From a uniform disc of radius R, a circular section of radius R//2 is ...

    Text Solution

    |

  8. A metre stick is balanced on a knife edge at its centre. When two coin...

    Text Solution

    |

  9. A solid wooden sphere rolls down two different inclined planes of the ...

    Text Solution

    |

  10. A hoop of radius 2m, weight 100 kg. It rolls along horizontal floor so...

    Text Solution

    |

  11. The oxygen molecule has a mass of 5.30 xx 10^(-26) kg and a moment of ...

    Text Solution

    |

  12. A sphere rolls up an inclined plane whose inclination is 30^(@). At th...

    Text Solution

    |

  13. As shown in Fig. the two sides of a step ladder BA and CA are 1.6 m lo...

    Text Solution

    |

  14. A man stands on a rotating platform, with his arms stretched horizonta...

    Text Solution

    |

  15. A bullet of mass 10 g and speed 500 m//s is fired into a door and gets...

    Text Solution

    |

  16. Two discs of moments of inertia I(1) and I(2) about their respective a...

    Text Solution

    |

  17. (a) Prove the theorem of perpendicular axes. (Hint : Square of the d...

    Text Solution

    |

  18. Prove the result that the velocity v of translation of a rolling body ...

    Text Solution

    |

  19. A disc rotating about its axis with angular speed ω(o) is placed light...

    Text Solution

    |

  20. (i) Explain why friction is necessary to make the disc to roll in the ...

    Text Solution

    |