Home
Class 12
PHYSICS
A uniform disc of mass M and radius R is...

A uniform disc of mass `M` and radius `R` is mounted on an axle supported in frictionless bearings. A light cord is wrapped around the rim of the disc and a steady downward pull `T` is exerted on the cord. The angular acceleration of the disc is

A

`F/MR`

B

`2F/MR`

C

`F/2MR`

D

`MR/F`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 10

    AAKASH INSTITUTE ENGLISH|Exercise Elxample|30 Videos

  • MOCK TEST 12

    AAKASH INSTITUTE ENGLISH|Exercise Example|18 Videos

Similar Questions

Explore conceptually related problems

Fig. shows a uniform disc of mass 1 kg and radius 0.2 m mounted on an axle supported in fixed frictionless bearings. A light string is wrapped around the rim of the wheel. A constant downwards pull of 2 kg wt. is exerted on the string. What is the angular acceleration of the wheel and the tangential acceleration of a point on the rim ?

A uniform disc of mass M =2.50 kg and radius R = 0.20 m is mounted on an axle supported on fixed frictionless bearings. A light cord wrapped around the rim is pulled with a force 5 N. On the same system of pulley and string, instead of pulling it down, a body of weight 5 N is suspended. If the first processis termed A and the second B, the tangential acceleration of point P will be:

A uniform disc of mass M and radius R is mounted on a fixed horizontal axis. A block of mass m hangs from a massless string that is wrapped around the rim of the disc. The magnitude of the acceleration of the falling block (m) is

The uniform speed of a body is the same as seen from any point in the body. A light cord is wrapped around the rim of the disc and mass of 1 kg is tied to the free end. If it is released from rest,

A wheel of mass 1.4 kg and radius 0.4 m is mounted on a frictionless, horizontal axle as shown in Fig. 7.2.50. Alight string wrapped around the rim supports a mass of 2 kg. What is the angular acceleration of the wheel and the tangential acceleration of a point on the rim ? Also find the tension in the string.

A uniform disc of mass M and radius R is hinged at its centre C . A force F is applied on the disc as shown . At this instant , angular acceleration of the disc is

A uniform disc of mass M and radius R is pivoted about the horizontal axis through its centre C A point mass m is glued to the disc at its rim, as shown in figure. If the system is released from rest, find the angular velocity of the disc when m reaches the bottom point B.

A solid cylinder of mass M and of radius R is fixed on a frictionless axle over a well. A rope negligible mass is wrapped around the cylinder. A bucket of uniform mass m is suspended from it. The linear acceleration bucket will:

A disc of a mass M and radius R can rotate freely in vertical plane about a horizontal axis at O . Distant r from the center of disc as shown in the figure. The disc is released from rest in the shown position. The angular acceleration of disc when OC rotates by an angles of 37^(@) is

A uniform disc of mass M, radius R is attached to a frictionless horizontal axis. Its rim is wound with a light string and a tension T is applied to it, the angular acceleration will be?

AAKASH INSTITUTE ENGLISH-MOCK TEST 11-Example
  1. A rod of weight W is supported by two parallel knife edges A and B and...

    Text Solution

    |

  2. Four rings each of mass M and radius R are arranged as shown in the fi...

    Text Solution

    |

  3. Moment of inertia of a uniform rod of length L and mass M, about an ax...

    Text Solution

    |

  4. find moment of inertia about an axis yy which passes through the centr...

    Text Solution

    |

  5. From a circular disc of radius R and mass 9M, a small disc of radius R...

    Text Solution

    |

  6. Moment of inertia depends on

    Text Solution

    |

  7. The physical quantity in translational motion, which is analogous to ...

    Text Solution

    |

  8. The moment of inertia of a uniform rod about a perpendicular axis pass...

    Text Solution

    |

  9. One solid sphere A and another hollow spher B are of same mass and sam...

    Text Solution

    |

  10. which of the following equation is incorrect for a body undergoing rot...

    Text Solution

    |

  11. Calculate the magnitude of linear acceleration of a particle moving in...

    Text Solution

    |

  12. Angular velocity

    Text Solution

    |

  13. the angular velocity omega of a particle varies with time t as omega =...

    Text Solution

    |

  14. If earth suddenly contracts to half of its present radius keeping its ...

    Text Solution

    |

  15. The initial angular velocity of a circular disc of mass M is omega(1) ...

    Text Solution

    |

  16. A hot solid sphere is rotating about a diameter at an angular velocity...

    Text Solution

    |

  17. A particle of mass 1kg has been thrown with initial speed 20 m/s makin...

    Text Solution

    |

  18. the angular acceleration of flywheel having moment of inertia 50 kg m^...

    Text Solution

    |

  19. when a ceiling fan is switched on it makes 10 revolutions in the first...

    Text Solution

    |

  20. A uniform disc of mass M and radius R is mounted on an axle supported ...

    Text Solution

    |