Home
Class 11
PHYSICS
Choose the correct options A mass of 10 ...

Choose the correct options
A mass of 10 kg is suspended from a rope wound on a wheel of diameter 40 cm. The torque about the axis of rotation is

A

39.2 N m

B

19.6 N m

C

4 N m

D

2 N m

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Gravitation

    TARGET PUBLICATION|Exercise Exercise|273 Videos
  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    TARGET PUBLICATION|Exercise Evaluation Test|12 Videos

Similar Questions

Explore conceptually related problems

Choose the correct options A mass of 10 kg is suspended from a rope wound on a wheel of diameter 40 cm. The torque about the axis of rotation is

A body of mass 100 gm is suspended from a light spring which stretches it by 10 cm. Find the force constant of the spring.

Choose the correct options A uniform bar RS weighs 100 g and is 80 cm long. From the end R two masses 50 g and 100 g hung from the bar at a distance of 10 cm and 60 cm respectively. If the bar is to remain horizontal when balanced on a knife-edge, its position is____ A. 42 cm from S B. 38 cm from R C. 38 cm from G D. 42 cm from R

Choose the correct options A steel bar AB of mass 10 kg and length 1 m is kept horizontal by supporting it at the two ends. Two weights of 4 kg and 6 kg are suspended from points of the bar at distances 30 cm and 80 cm respectively from the end A. The reaction at A is

A disc rotates horizontal at the rate of 100 rpm and M.I. of the disc about the axis of rotation is 1 kg m^2 . If a blob of molten wax weighing 50 gm drops gently at a distance 20 cm from the axis of rotation of the disc and remains stuck to it, then the increase in moment of inertia of the system will be

Angular acceleration of a body of mass 50 kg under the action of a torque of magnitude 500 Nm is 25 rad//s^2 . Then radius of gyration of the body about its axis of rotation is nearly equal to

A solid sphere of mass 2 kg and radius 5 cm is rotating at the rate of 300 rpm. The torque required to stop it in 2pi revolutions is

A steel wire of diameter d=1.0mm is stretched horizontally between two clamps located at the distance l=2.0m from each other. A weight of mass m=0.25kg is suspended from the mid-point O of the wire. What will the resulting descent of the point O be in centrimetres?

A flywheel is a mechanical device specifically designed to efficiently store rotational energy. For a particular machine it is in the form of a uniform 20 kg disc of diameter 50 cm, able to rotate about its own axis. Calculate its kinetic energy when rotating at 1200 rpm. Use pi^2 = 10 . Calculate its moment of inertia , in case it is rotated about a tangent in its plane.

TARGET PUBLICATION-LAWS OF MOTION-EXERCISE
  1. A rigid body is rotating about an axis. The best way to stop it is app...

    Text Solution

    |

  2. What is the torque of force vec F = (2hati -2hatj - 4hatk) N acting at...

    Text Solution

    |

  3. Choose the correct options A mass of 10 kg is suspended from a rope wo...

    Text Solution

    |

  4. is a pair of equal and parallel forces acting in opposite directions a...

    Text Solution

    |

  5. The moment of couple is independent of

    Text Solution

    |

  6. Force applied to open or close a water tap is an example of .

    Text Solution

    |

  7. If the force applied to a body produces rotational motion in an anticl...

    Text Solution

    |

  8. Condition of translational equilibrium of a rigid body is

    Text Solution

    |

  9. 6 m long see-saw remains horizontal when two children weighing 20 kg a...

    Text Solution

    |

  10. Where can the total mass of an object be assumed to be concentrated?

    Text Solution

    |

  11. The centre of mass of two particles lies

    Text Solution

    |

  12. Centre of mass of rectangular lamina lies on

    Text Solution

    |

  13. Three equal masses each of 50 g, are placed at the corners of a right ...

    Text Solution

    |

  14. Point masses of 2 kg, 3 kg, 5 kg and 7 kg are placed at the corners of...

    Text Solution

    |

  15. Choose the correct options The centre of mass of a system of two unifo...

    Text Solution

    |

  16. A point through which total weight of the body always acts vertically ...

    Text Solution

    |

  17. For regular shapes of the small body, which of the following statement...

    Text Solution

    |

  18. Choose the correct options For a circular ring centre of gravity lies

    Text Solution

    |

  19. A passenger getting down from a moving bus falls in the direction of t...

    Text Solution

    |

  20. An athlete runs some distance before taking a lang jump, because

    Text Solution

    |